District
Bangkok has 50 districts or khet, which mark the administrative subdivisions under the authority of the Bangkok Metropolitan Administration. However, these district areas might not accurately represent functional divisions of Bangkok's neighborhoods. Throughout the years, Bangkok has grown from a city scattered along the river to a metro area that spans as many as six provinces. The city's main business districts and residential areas are continuously expanding. The influx of foreigners from Western countries as well as immigrants from neighboring Laos, Myanmar, Cambodia and many other Asian countries along with the growth of the Thai population has stemmed hundreds of housing projects around the metro area, developing communities along the outskirts. Within years, these communities are engulfed by the greater Bangkok and become another part of this urban jungle. The most important business districts of Bangkok include Silom, Bangrak, Pinklao, Sathon, Phra Ram 2, Petchaburi, Phra Nakhon, Pathumwan, Chatuchak and Phra Ram 3 (New Financial Centre).

Transportation
Located 30 kilometres (19 miles) to the east of Bangkok, space-age Suvarnabhumi Airport , pronounced "soo-wanna-poom", started operations in September 2006 and is now Bangkok's main airport, used by all international flights as well as all Bangkok Airways , Air Asia, SGA Airline, PBair  and some Thai Airways domestic flights. There is only one terminal building, which covers both domestic and international flights, but it's huge (by some measures the world's largest) so allow time for getting around.