The document discusses several interesting places to visit in Prague, Czech Republic. The most famous sight is Prague Castle, the largest medieval castle in the world and former residence of Czech kings. Other notable landmarks mentioned include St. Vitus Cathedral, the oldest and most important church in Prague; Charles Bridge, the oldest bridge in Prague decorated with statues; Old Town Square, the historic center of Prague known for its astronomical clock; and Wenceslas Square, a main shopping area with the statue of St. Wenceslas.