13 January 2012
Prague Castle (Pražský hrad)
* Prague Castle (Pražský hrad) is a castle in Prague where the Kings of Bohemia, Holy Roman Emperors and presidents of Czechoslovakia and the Czech Republic have had their offices. The Czech Crown Jewels are kept here. Prague Castle is the biggest castle in the world (according to Guinness Book of Records the biggest ancient castle) at about 570 metres in length and an average of about 130 metres wide. - Wikipedia.