Timeline c 14th century Settlement of Bangkok c 1538 Construction of river bypass canal 1688 Siege of Bangkok expels French garrison 1767 Fall of Ayutthaya; Taksin establishes Thonburi as capital 1782 Phutthayotfa Chulalok moves capital to eastern bank 1820 Cholera pandemic kills 30,000 1849 Cholera again devastates population 1864 First paved road constructed 1893 Paknam railway opens, Paknam Incident & French blockade 1894 Electric trams begin service 1914 Beginning of city water supply 1924 Don Mueang Airport opens1925First recorded flood 1932 Memorial Bridge opens & coup ends absolute monarchy 1941–45 Bombing of Bangkok in World War II 1942 City-wide flooding lasts 2 months 1966 Bangkok hosts the 5th Asian Games 1968 First high-rise building constructed & Bangkok tram service ends 1972 Merger of Phra Nakhon and Thonburi Provinces 1975 Establishment of Bangkok Metropolitan Administration & first governor election 1981 First expressway opens to service1986 Rama IX Bridge opens 1990Gas truck explodes on New Petchburi Road 1995Prannok Pier capsizes 1998 Bangkok hosts Asian Games for the fourth time 1999 First mass-rapid transit line in Bangkok opens (BTS Sukumvit and Silom Lines)2004Metropolitan Rapid Transit (Bangkok) Blue Line opens2006Suvarnabhumi Airport opens 2011 Severe floods inundate parts of city 2015 August 2015 Bangkok bombing kills 23 in Thailand's deadliest-ever single terrorist attack2016King Power Mahanakhon is complete. It was the tallest skyscraper in Thailand.2021Krung Thep Aphiwat Central Terminal opens2024Major reform of the bus system2025 An earthquake in Bangkok & a sinkhole on Samsen Road2026Flooding in Bangkok
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.
Under Ayutthaya 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 ()Note that the Thai spelling of Thonburi here is different from the modern name, which is spelled . in a document from the reign of Ayutthayan king Chao Sam Phraya (1424–1448). (English language version.) 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), Quoted in 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 (), meaning 'island village', which later became Bangkok (, pronounced in Thai as ). Another theory regarding the origin of the name speculates that it is shortened from Bang Makok (), 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 (). Bangkok was probably a colloquial name, albeit one widely adopted by foreign visitors.
The importance of Bangkok 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.
Thonburi
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) on 28 December 1767 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.
Rattanakosin
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 (). 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 1833 Treaty of Amity and Commerce between Siam and the United States, however, refers to the city as "the Royal City of Sia-Yut'hia (commonly called Bangkok)". Treaty author Edmund Roberts writes:The spot on which the present capital stands, and the country in its vicinity, on both banks of the river for a considerable distance, were formerly, before the removal of the court to its present situation, called Bang-kok; but since that time, and for nearly sixty years past, it has been named Sia yuthia, (pronounced see-ah you-tè-ah, and by the natives, Krung, that is, the capital ;) it is called by both names here, but never Bang-kok; and they always correct foreigners when the latter make this mistake. The villages which occupy the right hand of the river, opposite to the capital, pass under the general name of Bang-kok. 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.