The largest castle complex in the world according to the Guinness Book of Records. Occupying the area of more than 7 hectares, the castle serves as the office of the Czech President. Prague Castle is the most popular attraction in Prague, visited by more than 4 million people annually, it is a must see. Its complex includes such famous sights as the St. Vitus Cathedral, the Old Royal palace, St. George's basilica, and the Golden Lane. Prague Castle is also considered to be one of the oldest continuous residences of power. It was inhabited by the Czech Royal dynasty of Premyslids as early as the 9th century! Their castle's location was, definitely, an advantage against medieval sieges. Prague Castle is standing 250 meters above the sea level. In 1526 Czech throne became occupied by a well-known Habsburg family, who ruled these lands till the end of the WWI. Then, the first Czechoslovakian president, Tomas Garrigue Masaryk, started a tradition of presidents living and working on the castle grounds. This tradition is respected even nowadays! You can visit Prague Castle area every day from 6:00 till 22:00. The museums and indoor exhibitions are opened from 9:00 till 17:00 in summer and till 16:00 in winter.