Peter Lenk, CC BY-SA 2.0 DE , via Wikimedia Commons
Konstanz is a city on Lake Constance (Bodensee), in southern Germany. Its preserved medieval district of Niederburg includes the Romanesque Konstanz Cathedral, known for its mix of decorative styles and a Gothic spire. The town hall is covered in delicate frescoes and has a Renaissance-style courtyard. The Rosgartenmuseum chronicles the region’s cultural history, exhibiting prehistoric to 20th-century objects.