A massive late-Gothic parish church standing just off Horní náměstí. Its grey-stone bulk feels heavier than the cathedral up the hill — the asymmetrical twin towers were never finished, which gives the façade its lopsided look. The interior is whitewashed and surprisingly austere, but it draws music-lovers from across Europe because of its remarkable organ.
The instrument is one of the finest in Central Europe, with over 10,400 pipes filling the western gallery. Concerts are held regularly, and the annual International Organ Festival in September is the main event in Olomouc's cultural calendar. Climb the south tower (a few hundred steps) for a fine panorama over the old town.