Prague Castle is the official residence and office of the President of the Czech Republic. Located in the Hradčany district of Prague and dating back to the ninth century, the castle has been a seat of power for kings of Bohemia, Holy Roman emperors, and presidents of Czechoslovakia. The Bohemian Crown Jewels are kept within a hidden room inside it.
The Guinness Book of Records lists Prague Castle as the largest ancient castle in the world. It occupies an area of almost 70,000 m2, at about 570 meters in length and an average of about 130 meters wide.
The castle buildings represent virtually every architectural style of the last millennium. Prague Castle includes Gothic St Vitus Cathedral, Romanesque Basilica of St. George, a monastery and several palaces, gardens and defense towers. Most of the castle areas are open to tourists. Nowadays, the castle houses several museums, including the National Gallery collection of Bohemian baroque and mannerism art, exhibition dedicated to Czech history, Toy Museum and the picture gallery of Prague Castle, based on the collection of Rudolph II. The Summer Shakespeare Festival regularly takes place in the courtyard of Burgrave Palace.
The neighborhood around Prague Castle is called Hradčany.