Charles Bridge and Old Town Square, Prague

The 14th-century stone Charles Bridge crosses the Vltava between the Old Town and Malá Strana, lined with 30 baroque statues of saints, with Gothic towers at each end that you can climb. It's packed by day; go at dawn.

A short walk away, the Old Town Square is surrounded by the Gothic Týn Church and pastel baroque houses. On the Old Town Hall, the Astronomical Clock, from 1410, shows a parade of apostles every hour. Climb the Town Hall tower for the view. The Jewish Quarter (Josefov), with its synagogues and old cemetery, is next door.