The indisputable heart of Prague. This vast open space is flanked by a pleasing blend of carefully restored architectural styles: Gothic, Renaissance, Baroque and neo-styles. The square is notable for its constant hum of activity, day and night, and a long history as centre stage for so many of the city's defining moments, from the execution of preacher J. Želivský in 1422, to the attacks on Soviet tanks with Molotov cocktails in 1968. Towering above the square, half-hidden behind a row of houses, is the fairy-turreted Týn Church. The centrepiece of the square is a memorial to Jan Hus. It was draped in swastikas by the Nazis and in black cloth to mourn the passing of the Prague Spring.