Bangkok
In 1782, King Phutthayotfa Chulalok moved the capital to Rattanakosin Island and erected the City Pillar on April 21. This date marks the official founding of Bangkok as the capital of Siam. Before this moment, the site served as a small trading post during the Ayutthaya era in the 15th century. The town sat on the west bank of the Chao Phraya River under the rule of Ayutthaya. Its strategic location near the river mouth allowed it to grow into a customs outpost with forts on both sides. A siege occurred here in 1688 when French forces were expelled from Siam. After the fall of Ayutthaya to the Burmese in 1767, King Taksin established his capital at the town, creating the Thonburi Kingdom. In 1782, King Rama I succeeded Taksin and shifted the capital to the eastern bank's Rattanakosin Island. The city inherited Ayutthaya's ceremonial name, which included many variants like Krung Thep Maha Nakhon. Edmund Roberts visited the city as an envoy of the United States in 1833 and noted its new status as capital.
Bangkok became the center stage for power struggles between the military and political elite after the country abolished absolute monarchy in 1932. The reigns of Kings Mongkut (Rama IV) and Chulalongkorn (Rama V) introduced steam engines, printing presses, rail transport, and utilities infrastructure. Formal education and healthcare arrived during their rule. As Thailand allied with Japan in World War II, Bangkok suffered Allied bombing but grew rapidly post-war due to US aid. The city served as a US military recreation destination, boosting tourism and establishing it as a sex tourism hub. Disproportionate urban development led to income inequality and rural migration. Population surged from 1.8 million to 3 million in the 1960s. Following the US withdrawal from Vietnam in 1973, Japanese businesses took over investment leadership. Rapid growth continued through the 1980s until stalled by the 1997 Asian financial crisis. Strings of popular protests followed, including student uprisings in 1973 and 1976, anti-military demonstrations in 1992, and frequent street protests since 2006.
The city sits in the Chao Phraya River delta at an average elevation of just one meter above sea level. Most of the area was originally swampland drained and irrigated for agriculture via canals built between the 16th and 19th centuries. Soft marine clay known as Bangkok clay averages two meters thick and overlies an aquifer system. Groundwater pumping caused subsidence reaching 10 centimeters per year in 1981. Parts of the city now lie below sea level. Subsidence increased flood risk compounded by inadequate drainage infrastructure and plastic waste blockage. Severe flooding affected much of the city in 1995 and again in 2011 when northern, eastern, and western districts were inundated for over two months. Heavy downpours overwhelm drainage systems while upstream runoff adds pressure. The geology amplifies long-period ground motion from distant earthquakes, making tall buildings vulnerable despite no local seismic activity. Seismic considerations entered building codes only in 2007. A study by the OECD estimated 5.138 million people could face coastal flooding by 2070. Another study published in October 2019 concluded up to 12 million Thais in the greater metropolitan area face annual flooding events.
Bangkok's rapid growth created a sprawling metropolis with ribbon developments extending along newly built roads. Zoning regulations were not fully implemented until 1992 despite the Litchfield Plan commissioning strategies in 1960. The city grew vertically with increasing numbers of high-rises and horizontally into suburban residential areas. Nonthaburi, Pak Kret, Rangsit, and Samut Prakan function as suburbs today. Large agricultural areas remain within city limits at eastern and western fringes covering about 40 square kilometers. Land use consists of 23 percent residential, 24 percent agriculture, and 30 percent commerce or industry. Traffic jams have plagued the city since the early 1990s due to limited road surface area comprising just eight percent of total land. In 2006 there were nearly four million vehicles including private cars and motorcycles. The Thai Traffic Police maintains a unit trained in midwifery to assist deliveries delayed by congestion. Air pollution reached serious levels in the 1990s before improving through fuel quality improvements. Atmospheric particulate matter dropped from 81 micrograms per cubic meter in 1997 to 43 in 2007. Plans for congestion pricing were announced in 2024 but overall conditions remain poor.
In 2022 Bangkok generated an economic output of 5.747 trillion baht equaling US$164 billion. This amounted to a per-capita GDP value of 634,109 baht more than twice the national average. Wholesale and retail trade contributed 24 percent of gross provincial product followed by manufacturing at 14.3 percent. Manufacturing is the most significant contributor when considering the entire metropolitan region accounting for 28.2 percent of regional product. The automotive industry based around Greater Bangkok represents Southeast Asia's largest production hub. Tourism generated 427.5 billion baht or US$13.38 billion in revenue during 2010. The Stock Exchange of Thailand lists 648 companies with combined market capitalization of 8.485 trillion baht as of late 2011. Seventeen Thai companies appear on the Forbes 2000 list all headquartered in the capital including PTT which holds Fortune Global 500 status. Income inequality remains high with a Gini coefficient of 0.48 indicating substantial disparity between skilled professionals and unskilled immigrants.
MasterCard ranked Bangkok as the top destination city by international visitor arrivals in its 2018 Global Destination Cities Index ahead of London with just over 20 million overnight visitors. Euromonitor International named it the world's best tourist destination in 2017 welcoming a record 32.4 million visitors. Of 162 cities worldwide, Bangkok topped rankings for four consecutive years from 2010 to 2013 according to Travel + Leisure magazine. Major Buddhist temples include Wat Phra Kaew, Wat Pho, and Wat Arun within the Grand Palace complex. Khao San Road attracts backpackers with budget accommodation shops and bars. Yaowarat serves as Chinatown known for street-side food stalls and restaurants. Taling Chan Floating Market offers views of traditional architecture along waterways. The Giant Swing and Erawan Shrine demonstrate Hindu influence while Vimanmek Mansion stands as the world's largest teak building. Jim Thompson House exemplifies traditional Thai architecture. Over one hundred thousand hawkers sell goods ranging from food items to clothing across the city. Nearly 15,000 vendors were evicted from 39 public areas in 2016 during crackdowns aimed at reclaiming pedestrian space.
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Common questions
When was Bangkok officially founded as the capital of Siam?
King Phutthayotfa Chulalok moved the capital to Rattanakosin Island and erected the City Pillar on the 21st of April 1782. This date marks the official founding of Bangkok as the capital of Siam.
What is the average elevation of Bangkok above sea level?
The city sits in the Chao Phraya River delta at an average elevation of just one meter above sea level. Most of the area was originally swampland drained and irrigated for agriculture via canals built between the 16th and 19th centuries.
How many people could face coastal flooding in Bangkok by 2070 according to OECD estimates?
A study by the OECD estimated 5.138 million people could face coastal flooding by 2070. Another study published in October 2019 concluded up to 12 million Thais in the greater metropolitan area face annual flooding events.
Which year did Bangkok generate an economic output of 5.747 trillion baht?
In 2022 Bangkok generated an economic output of 5.747 trillion baht equaling US$164 billion. This amounted to a per-capita GDP value of 634,109 baht more than twice the national average.
When did Euromonitor International name Bangkok the world's best tourist destination?
Euromonitor International named it the world's best tourist destination in 2017 welcoming a record 32.4 million visitors. Of 162 cities worldwide, Bangkok topped rankings for four consecutive years from 2010 to 2013 according to Travel + Leisure magazine.