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About bangkok :

Bangkok, known in Thai as Krung Thep or Krung Thep Maha Nakhon, is the capital and largest city of Thailand, with an official 1990 census population of 8,538,610. Bangkok is located at 13°45'N 100°31'E [1], on the east bank of the Chao Phraya River, near the Gulf of Thailand.

Bangkok is one of the fastest-growing, most economically dynamic cities in Southeast Asia.The World Meteorological Organization has dubbed Bangkok the world's hottest city. It is also one of the world's most popular tourist destinations.

History
Bangkok began as a small trading center and port community, called Bang Makok ("place of olive plums"), serving Ayutthaya, which was the capital of the nation (then known as Siam) until it fell to Burma in 1767. A new capital was then established at Thonburi (now part of Bangkok) on the west side of the river, before KingRama I built his palace on the east bank in 1782 and renamed his city Krung Thep, meaning the "City of Angels". The name Bangkok now refers only to an old district on the Thonburi side of the river, but continues to be used to refer to the entire city by most foreigners.

The full ceremonial name of Krung Thep is Krung Thep Mahanakhon Amon Rattanakosin Mahinthara Ayuthaya Mahadilok Phop Noppharat Ratchathani Burirom Udomratchaniwet Mahasathan Amon Piman Awatan Sathit Sakkathattiya Witsanukam Prasit, which means "The city of angels, the great city, the eternal jewel city, the impregnable city of God Indra, the grand capital of the world endowed with nine precious gems, the happy city, abounding in an enormous Royal Palace that resembles the heavenly abode where reigns the reincarnated god, a city given by Indra and built by Vishnukarn."

Airports :
Bangkok International Airport, commonly called "Don Muang", the busiest in South-East Asia, is located 25 kilometres (15.5 miles) north of the city of Bangkok, It serves the city and the areas around it and acts as a hub for Thailand and other parts of South-East Asia.

Bangkok International Airport provides a complex of two international terminals and one domestic terminal. The international terminals are built side by side and the domestic terminal is 500 metres from International Terminal 2, connected by an air-conditioned walkway and a free-to-user shuttle bus. Short-stay tourist visas may be obtained at airport immigration, which means that entry queues are often longer than at other airports.

Bangkok International Airport has car rental services available in all three terminals.

Bangkok Climate
Basically, Thailand has three seasons: a dry and hot season (from November until February), a very hot season (from March until the end of April; the weather is still dry, but very hot) and a wet and hot season (this is the monsoon season from May to the end of October), The best months for traveling are December to April