Černín Palace (Černínský palác), Prague

Located on the Loreta Square between Prague Castle and the Strahov Monastery, this massive structure is the third largest palace in Prague. Unfortunately, the regal palace is closed to the public, but its 135 meter-long façade, decorated with 30 Palladian columns, is worth visiting. Best known in recent memory for the March 1948 death of Jan Masaryk, son of the first Czech President and the last non-Communist in the first Communist cabinet, who toppled mysteriously from a window on the top floor as the Communists took power. Rumor has it that his fall was no accident - he was pushed.