Feldkirch is an ancient town in the western Austrian state of Vorarlberg. Visit Schattenburg Castle, a 12th-century castle with striking brown tiled roofs and white walls. The museum in the castle showcases local history and architecture. Admire the stunning Roman architecture of St Nikolaus Cathedral, the largest Gothic cathedral in Vorarlberg built-in 1200. Hear the monumental bell ring at Katzenturm, a defensive tower built during the Habsburgs reign. Explore old tape recorders, radios, televisions, gramophones, and electronics from different periods at the Radio Museum. Hike to Drei Schwestern Mountain, three sisters mountain range situated on the border between Liechtenstein and Austria.