Inscribed in the UNESCO world heritage list, the Prague Castle Complex is a group of palaces and church buildings of varying architectural styles.  Here you will find 10^th Century Romanesque buildings as well as the newest modifications of the 20^th Century.  The castle complex is the seat of the Head of State and is a culturally significant monument.  Within the complex walls, there are the remains of Czech Kings, Christian relics, historical documents and artistic treasures.