Grossmünster is Zurich’s most recognizable church, its twin towers rising above the Limmat in the heart of the old town. Construction of the Romanesque church began around 1100, although the distinctive tower tops were added much later. According to legend, Charlemagne founded it after his horse knelt at the graves of Zurich’s patron saints, Felix and Regula.
The church holds a central place in Swiss religious history: it was here that Huldrych Zwingli began preaching in 1519, helping launch the Reformation in Zurich. The spare interior reflects that Protestant heritage, with pale walls and stonework rather than elaborate ornament. Look for Augusto Giacometti’s richly colored choir windows and Sigmar Polke’s remarkable 2009 windows, some made from thin slices of agate.
For a different perspective, climb the Karlsturm’s winding staircase for views over Zurich’s rooftops, the lake and, on clear days, the Alps. Church entry is generally free, while the tower has a separate charge; check opening hours and service times before visiting. Weekday mornings tend to be quieter, leaving time afterward to explore the lanes of Niederdorf across the river.