Bangkok is the capital and most populous city of the Kingdom of Thailand. It is known in Thai as Krung Thep Maha Nakhon or simply Krung Thep. The city occupies 1,568.7 square kilometres in the Chao Phraya River delta in Central Thailand. Bangkok is in the Chao Phraya River delta in Thailand's central plains. The river meanders through the city in a southward direction, emptying into the Gulf of Thailand approximately 25 kilometres south of the city centre. Bangkok is one of the world's top tourist destination cities. As the main gateway through which visitors arrive in Thailand, Bangkok is visited by the majority of international tourists to the country. Royal palaces and temples as well as several museums constitute its major historical and cultural tourist attractions. Shopping and dining experiences offer a wide range of choices and prices. The city is also famous for its dynamic nightlife. Although Bangkok's sex tourism scene is well known to foreigners, it is usually not openly acknowledged by locals or the government.