The capital of the Czech Republic, Prague, is well known for its Gothic churches and baroque architecture. The Astronomical Clock features a show on the hour every hour. The Vltava River runs through the city, and the historic and picture-perfect Charles Bridge allows pedestrians to leisurely cross the river. The beautiful Prague Castle is the largest ancient castle in the world, with an impeccable changing of the guard ceremony. And with over 600 bars and 100 nightclubs in the city, you can easily find your version of fun.