Prague is the capital of the Czech Republic, located on the Moldova River. It has a population of 1.2 million in the city and 1.9 million in the metropolitan area, making it the largest city in the country. Prague has a long history, first as the capital of Bohemia and later Czechoslovakia. During the 18th and 19th centuries, Prague experienced economic growth and development. Many historic buildings and monuments were constructed, including the National Museum and State Theatre. Some of Prague's most famous landmarks are the Astronomical Clock, Old Town Square, Charles Bridge, and the Municipal House.