Bangkok is the largest city in Thailand, as well as being it's capital and main port. It is the cultural, educational, political and economic center of Thailand, as well as being the only metropolis. Bangkok has grown and expanded to include the area Thon Buri, which had at one point been the capital of Siam, and the combined area is commonly known as Krung Thep Mahanakhon. The area of Bangkok, including Thon Buri and other provinces, is approximately 23 miles (37 km).
