Ulan Bator is the capital of Mongolia. It is also known as Ulaanbaatar, which is derived from the Mongolian words for 'red hero'. The city was founded in 1639 and has grown to become the largest city in Mongolia, with a population of over 1.3 million people. ULAN Bator is the political, economic, and cultural center of Mongolia, and is home to many government buildings, universities, and museums.