Wat Pho, also spelled Wat Po, is a Buddhist temple complex in the Phra Nakhon District, Bangkok, Thailand. It is on Rattanakosin Island, directly south of the Grand Palace. Known also as the Temple of the Reclining Buddha, its official name is Wat Phra Chetuphon Wimon Mangkhalaram Rajwaramahawihan. The more commonly known name, Wat Pho, is a contraction of its older name, Wat Photaram
The temple is first on the list of six temples in Thailand classed as the highest grade of the first-class royal temples. It is associated with King Rama I who rebuilt the temple complex on an earlier temple site. It became his main temple and is where some of his ashes are enshrined. The temple was later expanded and extensively renovated by Rama III. The temple complex houses the largest collection of Buddha images in Thailand, including a 46 m long reclining Buddha. The temple is considered the earliest centre for public education in Thailand, and the marble illustrations and inscriptions placed in the temple for public instructions has been recognised by UNESCO in its Memory of the World Programme. It houses a school of Thai medicine, and is also known as the birthplace of traditional Thai massage which is still taught and practiced at the temple.
Wat Pho is one of Bangkok's oldest temples. It existed before Bangkok was established as the capital by King Rama I. It was originally named Wat Photaram or Podharam, from which the name Wat Pho is derived. The name refers to the monastery of the Bodhi tree in Bodh Gaya, India where Buddha is believed to have attained enlightenment. The date of the construction of the old temple and its founder are unknown, but it is thought to have been built or expanded during the reign of King Phetracha (1688–1703). The southern section of Wat Pho used to be occupied by part of a French Star fort that was demolished by King Phetracha after the 1688 Siege of Bangkok.
After the fall of Ayutthaya in 1767 to the Burmese, King Taksin moved the capital to Thonburi where he located his palace beside Wat Arun on the opposite side of the Chao Phraya River from Wat Pho. The proximity of Wat Pho to this royal palace elevated it to the status of a wat luang ('royal monastery').
In 1782, King Rama I moved the capital from Thonburi across the river to Bangkok and built the Grand Palace adjacent to Wat Pho. In 1788, he ordered the construction and renovation at the old temple site of Wat Pho, which had by then become dilapidated. The site, which was marshy and uneven, was drained and filled in before construction began. During its construction, Rama I also initiated a project to remove Buddha images from abandoned temples in Ayutthaya, Sukhothai, as well other sites in Thailand, and many of these retrieved Buddha images were kept at Wat Pho. These include the remnants of an enormous Buddha image from Ayuthaya's Wat Phra Si Sanphet destroyed by the Burmese in 1767, and these were incorporated into a chedi in the complex. The rebuilding took over seven years to complete. In 1801, twelve years after work began, the new temple complex was renamed Phra Chetuphon Vimolmangklavas in reference to the vihara of Jetavana, and it became the main temple for Rama I.
The complex underwent significant changes over the next 260 years, particularly during the reign of Rama III (1824-1851). In 1832, King Rama III began renovating and enlarging the temple complex, a process that took 16 years and seven months to complete. The ground of the temple complex was expanded to 56 rai (9.0 ha; 22 acres), and most of the structures now present in Wat Pho were either built or rebuilt during this period, including the Chapel of the Reclining Buddha. He also turned the temple complex into a public center of learning by decorating the walls of the buildings with diagrams and inscriptions on various subjects.: 90 The inscriptions were written by about 50 people from the court of Rama III and learned monks led by Supreme Patriarch Prince Paramanuchitchinorot (1790-1853), the abbot of Wat Pho, a Buddhist scholar, historian and poet. On 21 February 2008, these marble illustrations and inscriptions was registered in the Memory of the World Programme launched by UNESCO to promote, preserve and propagate the wisdom of the world heritage. Wat Pho is regarded as Thailand's first university and a center for traditional Thai massage. It served as a medical teaching center in the mid-19th century before the advent of modern medicine, and the temple remains a center for traditional medicine today where a private school for Thai medicine founded in 1957 still operates.
The name of the complex was changed again to Wat Phra Chetuphon Vimolmangklararm during the reign of King Rama IV. Apart from the construction of a fourth great chedi and minor modifications by Rama IV, there had been no significant changes to Wat Pho since. Repair work, however, is a continuing process, often funded by devotees of the temple. The temple was restored again in 1982 before the Bangkok Bicentennial Celebration.
Wat Pho is one of the largest and oldest wats in Bangkok covering an area of 50 rai or 80,000 square metres. It is home to more than one thousand Buddha images, as well as one of the largest single Buddha images at 46 metres (151 ft) in length. The Wat Pho complex consists of two walled compounds bisected by Chetuphon Road running in the east–west direction. The larger northern walled compound, the phutthawat, is open to visitors and contains the finest buildings dedicated to the Buddha, including the bot with its four directional viharn, and the temple housing the reclining Buddha. The southern compound, the sankhawat, contains the residential quarters of the monks and a school. The perimeter wall of the main temple complex has sixteen gates, two of which serve as entrances for the public (one on Chetuphon Road, the other near the northwest corner).
The temple grounds contain four great chedis, 91 small chedis, two belfries, a bot (central shrine), a number of viharas (halls) and various buildings such as pavilions, as well as gardens and a small temple museum. Architecturally the chedis and buildings in the complex are different in style and sizes. A number of large Chinese statues, some of which depict Europeans, are also found in the complex guarding the gates of the perimeter walls as well as other gates in the compound. These stone statues were originally imported as ballast on ships trading with China.
Wat Pho was also intended to serve as a place of education for the general public. To this end a pictorial encyclopedia was engraved on granite slabs covering eight subject areas: history, medicine, health, custom, literature, proverbs, lexicography, and the Buddhist religion. These plaques, inscribed with texts and illustrations on medicine, Thai traditional massage, and other subjects, are placed around the temple, for example, within the Sala Rai or satellite open pavilions. Dotted around the complex are 24 small rock gardens (khao mor) illustrating rock formations of Thailand, and one, called the Contorting Hermit Hill, contains some statues showing methods of massage and yoga positions. There are also drawings of constellations on the wall of the library, inscriptions on local administration, as well as paintings of folk tales and animal husbandry.
Phra Ubosot (Phra Uposatha) or bot is the ordination hall, the main hall used for performing Buddhist rituals, and the most sacred building of the complex. It was constructed by King Rama I in the Ayuthaya-style, and later enlarged and reconstructed in the Rattanakosin-style by Rama III. The bot was dedicated in 1791, before the rebuilding of Wat Pho was completed. This building is raised on a marble platform, and the ubosot lies in the center of courtyard enclosed by a double cloister (Phra Rabiang).
Inside the ubosot is a gold and crystal three-tiered pedestal topped with a gilded Buddha made of a gold-copper alloy, and over the statue is a nine-tiered umbrella representing the authority of Thailand. The Buddha image, known as Phra Buddha Theva Patimakorn and thought to be from the Ayutthaya period, was moved here by Rama I from Wat Sala Si Na (now called Wat Khuhasawan) in Thonburi. Rama IV later placed some ashes of Rama I under the pedestal of the Buddha image so that the public may pay homage to both Rama I and the Buddha at the same time. There are also ten images of Buddha's disciples in the hall: Moggalana is to the left of Buddha and Sariputta to the right, with eight Arahants below.
The exterior balustrade surrounding the main hall has around 150 depictions in stone of the epic, Ramakien, the ultimate message of which is transcendence from secular to spiritual dimensions. The stone panels were recovered from a temple in Ayuthaya. The ubosot is enclosed by a low wall called kamphaeng kaew, which is punctuated by gateways guarded by mythological lions, as well as eight structures that house bai sema, stone markers that delineate the sacred space of the bot.
Phra Rabiang - This double cloister contains around 400 images of Buddha from northern Thailand selected out of the 1,200 originally brought by King Rama I. Of these Buddha images, 150 are on the inner side of the double cloister, another 244 images are on the outer side. These Buddha figures, some standing and some seated, are evenly mounted on matching gilded pedestals. These images are from different periods in Siamese history, such as the Chiangsaen, Sukhothai, U-Thong, and Ayutthaya eras, but they were renovated by Rama I and covered with stucco and gold leaves to make them look similar.
The Phra Rabiang is intersected by four viharns. The viharn in the east contains an eight metre tall standing Buddha, the Buddha Lokanatha, originally from Ayutthaya. In its antechamber is Buddha Maravichai, sitting under a bodhi tree, originally from Sawankhalok of the late-Sukhothai period. The one on the west has a seated Buddha sheltered by a naga, the Buddha Chinnasri, while the Buddha on the south, the Buddha Chinnaraja, has five disciples seated in front listening to his first sermon. Both Buddhas in the south and west viharns were brought from Sukhothai by Rama I. The Buddha in the north viharn, called Buddha Palilai, was cast in the reign of Rama I. The viharn on the west contains a small museum.
Phra Prang - There are four towers, or phra prang, at each corner of the courtyard around the bot. Each of the towers is tiled with marble and contains four Khmer-style statues which are the guardian divinities of the Four Cardinal Points.
This is a group of four large stupas, each 42 metres high. These four chedis are dedicated to the first four Chakri kings. The first, in green mosaic tiles, was constructed by Rama I to house the remnants of the great Buddha from Ayuthaya, which was scorched to remove its gold covering by the Burmese. Two more were built by Rama III, one in white tiles to hold the ashes of his father Rama II, another in yellow for himself. A fourth in blue was built by Rama IV who then enclosed the four chedis leaving no space for more to be built.
The viharn or wihan contains the reclining Buddha and was constructed in the reign of Rama III emulating the Ayutthaya style. The interior is decorated with panels of mural.
Adjacent to this building is a small raised garden (Missakawan Park) with a Chinese-style pavilion; the centre piece of the garden is a bodhi tree which was propagated from the Jaya Sri Maha Bodhi tree in Sri Lanka that is believed to have originally came from a tree in India where Buddha sat while awaiting enlightenment.
Phra Mondop or the ho trai is the Scripture Hall containing a small library of Buddhist scriptures. The building is not generally open to the public as the scriptures, which are inscribed on palm leaves, need to be kept in a controlled environment for preservation. The library was built by King Rama III. Guarding its entrance are figures called Yak Wat Pho ('Wat Pho's Giants') placed in niches beside the gates. Around Phra Mondop are three pavilions with mural paintings of the beginning of Ramayana.
Phra Chedi Rai - Outside the Phra Rabiang cloisters are dotted many smaller chedis, called Phra Chedi Rai. Seventy-one of these small chedis were built by Rama III, each five metres in height. There are also four groups of five chedis that shared a single base built by Rama I, one on each corner outside the cloister. The 71 chedis of smaller size contain the ashes of the royal family, and 20 slightly larger ones clustered in groups of five contain the relics of Buddha.
Sala Karn Parien - This hall is next to the Phra Mondop at the southwest corner of the compound, and is thought to date from the Ayutthaya period. It serves as a learning and meditation hall. The building contains the original Buddha image from the bot which was moved here to make way for the Buddha image currently in the bot. Next to it is a garden called The Crocodile Pond.
Sala Rai - There are 16 satellite pavilions, most of them placed around the edge of the compound, and murals depicting the life of Buddha may be found in some of these. Two of these are the medical pavilions between Phra Maha Chedi Si Ratchakarn and the main chapel. The north medicine pavilion contains Thai traditional massage inscriptions with 32 drawings of massage positions on the walls while the one to the south has a collection of inscriptions on guardian angel that protects the newborn.
Phra Viharn Kod - This is the gallery which consists of four viharas, one on each corner outside the Phra Rabiang.
Tamnak Wasukri - Also called the poet's house, this is the former residence of Prince Patriarch Paramanuchitchinorot, a scholar, historian and poet. The house was a gift from his nephew Rama III. This building is in the living quarters of the monks in the southern compound and is open once a year on his birthday.
The wat and the reclining Buddha (Phra Buddhasaiyas, Thai: พระพุทธไสยาสน์) were built by Rama III in 1832. The image of the reclining Buddha represents the entry of Buddha into Nirvana and the end of all reincarnations. The posture of the image is referred to as sihasaiyas, the posture of a sleeping or reclining lion. The figure is 15 m high and 46 m long, and it is one of the largest Buddha statues in Thailand.
The figure has a brick core, which was modelled and shaped with plaster, then gilded. The right arm of the Buddha supports the head with tight curls, which rests on two box-pillows encrusted with glass mosaics. The soles of the feet of the Buddha are 3 m high and 4.5 m long, and inlaid with mother-of-pearl. They are each divided into 108 arranged panels, displaying the auspicious symbols by which Buddha can be identified, such as flowers, dancers, white elephants, tigers, and altar accessories. At the center of each foot is a circle representing a chakra or 'energy point'. There are 108 bronze bowls in the corridor representing the 108 auspicious characters of Buddha. Visitors may drop coins in these bowls as it is believed to bring good fortune, and it also helps the monks to maintain the wat.
Although the reclining Buddha is not a pilgrimage destination, it remains an object of popular piety. An annual celebration for the reclining Buddha is held around the time of the Siamese Songkran or New Year in April, which also helps raise funds for the upkeep of Wat Pho.
The temple is considered the first public university of Thailand, teaching students in the fields of religion, science, and literature through murals and sculptures. A school for traditional medicine and massage was established at the temple in 1955, and now offers four courses in Thai medicine: Thai pharmacy, Thai medical practice, Thai midwifery, and Thai massage. This, the Wat Pho Thai Traditional Medical and Massage School, is the first school of Thai medicine approved by the Thai Ministry of Education, and one of the earliest massage schools. It remains the national headquarters and the center of education of traditional Thai medicine and massage to this day. Courses on Thai massage are held in Wat Pho, and these may last a few weeks to a year. Two pavilions at the eastern edge of the Wat Pho compound are used as classrooms for practising Thai traditional massage and herbal massage, and visitors can received massage treatment here for a fee. The Thai massage or Nuad Thai taught at Wat Pho has been included in UNESCO's list of Intangible Cultural Heritage, and Wat Pho has trained more than 200,000 massage therapists who practice in 145 countries.
There are many medical inscriptions and illustrations placed in various buildings around the temple complex, some of which serve as instructions for Thai massage therapists, particularly those in the north medical pavilion. They were inscribed by scholars during the reign of King Rama III. Among these are 60 inscribed plaques, 30 each for the front and back of human body, showing pressure points used in traditional Thai massage. These therapeutic points and energy pathways, known as sen, with explanations given on the walls next to the plaques.
Bangkok, officially known in Thai as Krung Thep Maha Nakhon and colloquially as Krung Thep, is the capital and most populous city of Thailand. The city occupies 1,568.7 square kilometres (605.7 sq mi) in the Chao Phraya River delta in central Thailand and has an estimated population of 10.539 million as of 2020, 15.3 percent of the country's population. Over 14 million people (22.2 percent) lived within the surrounding Bangkok Metropolitan Region at the 2010 census, making Bangkok an extreme primate city, dwarfing Thailand's other urban centres in both size and importance to the national economy.
Bangkok traces its roots to a small trading post during the Ayutthaya Kingdom in the 15th century, which eventually grew and became the site of two capital cities, Thonburi in 1768 and Rattanakosin in 1782. Bangkok was at the heart of the modernization of Siam, later renamed Thailand, during the late-19th century, as the country faced pressures from the West. The city was at the centre of Thailand's political struggles throughout the 20th century, as the country abolished absolute monarchy, adopted constitutional rule, and underwent numerous coups and several uprisings. The city, incorporated as a special administrative area under the Bangkok Metropolitan Administration in 1972, grew rapidly during the 1960s through the 1980s and now exerts a significant impact on Thailand's politics, economy, education, media and modern society.
The Asian investment boom in the 1980s and 1990s led many multinational corporations to locate their regional headquarters in Bangkok. The city is now a regional force in finance and business. It is an international hub for transport and health care, and has emerged as a centre for the arts, fashion, and entertainment. The city is known for its street life and cultural landmarks, as well as its red-light districts. The Grand Palace and Buddhist temples including Wat Arun and Wat Pho stand in contrast with other tourist attractions such as the nightlife scenes of Khaosan Road and Patpong. Bangkok is among the world's top tourist destinations, and has been named the world's most visited city consistently in several international rankings.
Bangkok's rapid growth coupled with little urban planning has resulted in a haphazard cityscape and inadequate infrastructure. Despite an extensive expressway network, an inadequate road network and substantial private car usage have led to chronic and crippling traffic congestion, which caused severe air pollution in the 1990s. The city has since turned to public transport in an attempt to solve the problem, operating eight urban rail lines and building other public transit, but congestion still remains a prevalent issue. The city faces long-term environmental threats such as sea level rise due to climate change.
The history of Bangkok, the capital of Thailand, dates at least to the early 15th century, when it was under the rule of Ayutthaya. Due to its strategic location near the mouth of the Chao Phraya River, the town gradually increased in importance, and after the fall of Ayutthaya King Taksin established his new capital of Thonburi there, on the river's west bank. King Phutthayotfa Chulalok, who succeeded Taksin, moved the capital to the eastern bank in 1782, to which the city dates its foundation under its current Thai name, "Krung Thep Maha Nakhon". Bangkok has since undergone tremendous changes, growing rapidly, especially in the second half of the 20th century, to become the primate city of Thailand. It was the centre of Siam's modernization in the late 19th century, subjected to Allied bombing during the Second World War, and has long been the modern nation's central political stage, with numerous uprisings and coups d'état having taken place on its streets throughout the years.
It is not known exactly when the area which is now Bangkok was first settled. It probably originated as a small farming and trading community, situated in a meander of the Chao Phraya River within the mandala of Ayutthaya's influence. The town had become an important customs outpost by as early as the 15th century; the title of its customs official is given as Nai Phra Khanon Thonburi (Thai: นายพระขนอนทณบุรี) in a document from the reign of Ayutthayan king Chao Sam Phraya (1424–1448). The name also appears in the 1805 revised code of laws known as the Law of Three Seals.
At the time, the Chao Phraya flowed through what are now the Bangkok Noi and Bangkok Yai canals, forming a large loop in which lay the town. In the reign of King Chairacha (either in 1538 or 1542), a waterway was excavated, bypassing the loop and shortening the route for ships sailing up to Ayutthaya. The flow of the river has since changed to follow the new waterway, dividing the town and making the western part an island. This geographical feature may have given the town the name Bang Ko (บางเกาะ), meaning 'island village', which later became Bangkok (บางกอก, pronounced in Thai as [bāːŋ kɔ̀ːk]). Another theory regarding the origin of the name speculates that it is shortened from Bang Makok (บางมะกอก), makok being the name of Spondias pinnata, a plant bearing olive-like fruit. This is supported by the fact that Wat Arun, a historic temple in the area, used to be named Wat Makok. Specific mention of the town was first made in the royal chronicles from the reign of King Maha Chakkraphat (1548–1568), giving its name as Thonburi Si Mahasamut (ธนบุรีศรีมหาสมุทร). Bangkok was probably a colloquial name, albeit one widely adopted by foreign visitors.
The importance of Bangkok/Thonburi increased with the amount of Ayutthaya's maritime trade. Dutch records noted that ships passing through Bangkok were required to declare their goods and number of passengers, as well as pay customs duties. Ships' cannons would be confiscated and held there before they were allowed to proceed upriver to Ayutthaya. An early English language account is that of Adam Denton, who arrived aboard the Globe, an East India Company merchantman bearing a letter from King James I, which arrived in "the Road of Syam" (Pak Nam) on 15 August 1612, where the port officer of Bangkok attended to the ship. Denton's account mentions that he and his companions journeyed "up the river some twenty miles to a town called Bancope, where we were well received, and further 100 miles to the city...."
Ayutthaya's maritime trade was at its height during the reign of King Narai (1656–1688). Recognition of the city's strategic location guarding the water passage to Ayutthaya lead to expansion of the military presence there. A fort of Western design was constructed on the east side of the river around 1685–1687 under the supervision of French engineer de la Mare, probably replacing an earlier structure, while plans to rebuild the fort on the west bank were also made. De la Mare had arrived with the French embassy of Chevalier de Chaumont, and remained in Siam along with Chevalier de Forbin, who had been appointed governor of Bangkok. The Bangkok garrison under Forbin consisted of Siamese, Portuguese, and French reportedly totalling about one thousand men.
French control over the city was further consolidated when the French General Desfarges, who had arrived with the second French embassy in 1687, secured the king's permission to board troops there. This, however, lead to resentment among Siamese nobles, led by Phetracha, ultimately resulting in the Siamese revolution of 1688, in which King Narai was overthrown and 40,000 Siamese troops besieged Bangkok's eastern fort for four months before an agreement was reached and the French were allowed to withdraw. The revolution resulted in Siam's ties with the West being virtually severed, steering its trade towards China and Japan. The eastern fort was subsequently demolished on Phetracha's orders.
Ayutthaya was razed by the Burmese in 1767. In the following months, multiple factions competed for control of the kingdom's lands. Of these, Phraya Tak, governor of Tak and a general fighting in Ayutthaya's defence prior to its fall, emerged as the strongest. After succeeding in reclaiming the cities of Ayutthaya and Bangkok, Phraya Tak declared himself king (popularly known as King Taksin) in 1768 and established Thonburi as his capital. Reasons given for this change include the totality of Ayutthaya's destruction and Thonburi's strategic location. Being a fortified town with a sizeable population meant that not much would need to be reconstructed. The existence of an old Chinese trading settlement on the eastern bank allowed Taksin to use his Chinese connections to import rice and revive trade.
King Taksin had the city area extended northwards to border the Bangkok Noi Canal. A moat was dug to protect the city's western border, on which new city walls and fortifications were built. Moats and walls were also constructed on the eastern bank, encircling the city together with the canals on the western side. The king's palace (Thonburi Palace) was built within the old city walls, including the temples of Wat Chaeng (Wat Arun) and Wat Thai Talat (Wat Molilokkayaram) within the palace grounds. Outlying orchards were re-landscaped for rice farming.
Much of Taksin's reign was spent in military campaigns to consolidate the Thonburi Kingdom's hold over Siamese lands. His kingdom, however, would last only until 1782 when a coup was mounted against him, and the general Chao Phraya Chakri established himself as king, later to be known as Phutthayotfa Chulalok or Rama I.
Rama I re-established the capital on the more strategic east bank of the river, relocating the Chinese already settled there to the area between Wat Sam Pluem and Wat Sampheng (which developed into Bangkok's Chinatown). Fortifications were rebuilt, and another series of moats was created, encircling the city in an area known as Rattanakosin Island.
The erection of the city pillar on 21 April 1782 is regarded as the formal date of the city's establishment. (The year would later mark the start of the Rattanakosin Era after calendar reforms by King Rama V in 1888.) Rama I named the new city Krung Rattanakosin In Ayothaya (กรุงรัตนโกสินทร์อินท์อโยธยา). This was later modified by King Nangklao to be: Krungthepmahanakhon Bowonrattanakosin Mahintha-ayutthaya. While settlements on both banks were commonly called Bangkok, both the Burney Treaty of 1826 and the Roberts Treaty of 1833 refer to the capital as the City of Sia-Yut'hia. King Mongkut (Rama IV) would later give the city its full ceremonial name:
Rama I modelled his city after the former capital of Ayutthaya, with the Grand Palace, Front Palace and royal temples by the river, next to the royal field (now Sanam Luang). Continuing outwards were the royal court of justice, royal stables and military prison. Government offices were located within the Grand Palace, while residences of nobles were concentrated south of the palace walls. Settlements spread outwards from the city centre.
The new capital is referred to in Thai sources as Rattanakosin, a name shared by the Siamese kingdom of this historical period. The name Krung Thep and Krung Thep Maha Nakhon, both shortened forms of the full ceremonial name, began to be used near the end of the 19th century. Foreigners, however, continued to refer to the city by the name Bangkok, which has seen continued use until this day.
Most of Rama I's reign was also marked by continued military campaigns, though the Burmese threat gradually declined afterwards. His successors consistently saw to the renovation of old temples, palaces, and monuments in the city. New canals were also built, gradually expanding the fledgling city as areas available for agriculture increased and new transport networks were created.
At the time of the city's foundation, most of the population lived by the river or the canals, often in floating houses on the water. Waterways served as the main method of transportation, and farming communities depended on them for irrigation. Outside the city walls, settlements sprawled along both river banks. Forced settlers, mostly captives of war, also formed several ethnic communities outside the city walls.
Large numbers of Chinese immigrants continued to settle in Bangkok, especially during the early 19th century. Such was their prominence that Europeans visiting in the 1820s estimated that they formed over half of the city population. The Chinese excelled in trade, and led the development of a market economy. The Chinese settlement at Sampheng had become a bustling market by 1835.
By the mid-19th century, the West had become an increasingly powerful presence. Missionaries, envoys and merchants began re-visiting Bangkok and Siam, bringing with them both modern innovations and the threat of colonialism. King Mongkut (Rama IV, reigned 1851–1868) was open to Western ideas and knowledge, but was also forced to acknowledge their powers, with the signing of the Bowring Treaty in 1855. During his reign, industrialization began taking place in Bangkok, which saw the introduction of the steam engine, modern shipbuilding and the printing press. Influenced by the Western community, Charoen Krung Road, the city's first paved street, was constructed in 1862–1864. This was followed by Bamrung Mueang, Fueang Nakhon, Trong (now Rama IV) and Si Lom Roads. Land transport would later surpass the canals in importance, shifting people's homes from floating dwellings toward permanent buildings. The limits of the city proper were also expanded during his reign, extending to the Phadung Krung Kasem Canal, dug in 1851.
King Mongkut's son Chulalongkorn (r. 1868–1910) was set upon modernizing the country. He engaged in wide-ranging reforms, abolishing slavery, corvée (unfree labour) and the feudal system, and creating a centralized bureaucracy and a professional army. The Western concept of nationhood was adopted, and national borders demarcated against British and French territories. Disputes with the French resulted in the Paknam Incident in 1893, when the French sent gunboats up the Chao Phraya to blockade Bangkok, resulting in Siam's concession of territory to France.
With Chulalongkorn's reforms, governance of the capital and the surrounding areas, established as Monthon Krung Thep Phra Mahanakhon (มณฑลกรุงเทพพระมหานคร), came under the Ministry of Urban Affairs (Nakhonban). During his reign many more canals and roads were built, expanding the urban reaches of the capital. Infrastructure was developed, with the introduction of railway and telegraph services between Bangkok and Samut Prakan and then expanding countrywide. Electricity was introduced, first to palaces and government offices, then to serve electric trams in the capital and later the general public. The King's fascination with the West was reflected in the royal adoption of Western dress and fashions, but most noticeably in architecture. He commissioned the construction of the neoclassical Ananta Samakhom Throne Hall at the new Dusit Palace, which was linked to the historic city centre by the grand Ratchadamnoen Avenue, inspired by the Champs-Élysées in Paris. Examples of Western influence in architecture became visible throughout the city.
By 1900, rural market zones in Bangkok began developing into residential districts. Rama VI (1910–1925) continued his predecessor's program of the development of public works by establishing Chulalongkorn University in 1916, and commissioned a system of locks to control waterway levels surrounding the developing city, he also provided the city's first and largest recreational area, Lumphini Park. The Memorial Bridge was constructed in 1932 to connect Thonburi to Bangkok, which was believed to promote economic growth and modernization in a period when infrastructure was developing considerably. Bangkok became the centre stage for power struggles between the military and political elite as the country abolished absolute monarchy in 1932. It was subject to Japanese occupation and Allied bombing during World War II. With the war over in 1945, British and Indian troops landed in September, and during their brief occupation of the city disarmed the Japanese troops. A significant event following the return of the young king, Ananda Mahidol, to Thailand, intended to defuse post-war tensions lingering between Bangkok's ethnic Chinese and Thai people, was his visit to Bangkok's Chinatown Sam Peng Lane (ซอยสำเพ็ง), on 3 June 1946.
As a result of pro-Western bloc treaties Bangkok rapidly grew in the post-war period as a result of United States developmental aid and government-sponsored investment. Infrastructure, including the Don Mueang International Airport and highways, was built and expanded. Bangkok's role as an American military R&R destination launched its tourism industry as well as sex trade. Disproportionate urban development led to increasing income inequalities and unprecedented migration from rural areas into Bangkok; its population surged from 1.8 to 3 million in the 1960s. Following the United States' withdrawal from Vietnam, Japanese businesses took over as leaders in investment, and the expansion of export-oriented manufacturing led to growth of the financial market in Bangkok. Rapid growth of the city continued through the 1980s and early 1990s, until it was stalled by the 1997 Asian financial crisis. By then, many public and social issues had emerged, among them the strain on infrastructure reflected in the city's notorious traffic jams. Bangkok's role as the nation's political stage continues to be seen in strings of popular protests, from the student uprisings in 1973 and 1976, anti-military demonstrations in 1992, and successive anti-government protests by the "Yellow Shirt" and "Red Shirt" movements from 2008 on.
Administratively, eastern Bangkok and Thonburi had been established as separate provinces in 1915. (The province east of the river was named Phra Nakhon (พระนคร.) A series of decrees in 1971–1972 resulted in the merger of these provinces and its local administrations, forming the current city of Bangkok which is officially known in Thai as Krung Thep Maha Nakhon. The Bangkok Metropolitan Administration (BMA) was created in 1975 to govern the city, and its governor has been elected since 1985.
