Prague (/ ˈ p r ɑː ɡ / PRAHG; Czech: Praha ⓘ) [a] is the capital and largest city of the Czech Republic [9] and the historical capital of Bohemia.Situated on the Vltava river, Prague is home to about 1.4 million people.. Prague is a political, cultural, and economic hub of Central Europe, with a rich history and Romanesque, Gothic, Renaissance and Baroque architecture.