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 kilometers (605.7 sq mi) in the Chao Phraya River delta in central Thailand and has an estimated population of 10 million people as of 2024,13% of the country’s population. Over 17.4 million people (25% of Thailand’s population) live within the surrounding Bangkok Metropolitan Region as of the 2021 estimate, making Bangkok a megacity and an extreme primate city, dwarfing Thailand’s other urban centers in both size and importance to the national economy.

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, business, and pop culture. 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 in several international rankings.