King Baudouin Tower

The King Baudouin Tower is a well-preserved medieval defensive tower on the edge of Aachen's old town, one of the few remaining visible remnants of the city's former fortifications. Aachen's history of fortification stretches back to the Carolingian era, when Charlemagne developed the city as his preferred imperial residence and subsequent rulers extended its defensive walls over centuries. The tower takes its name from King Baudouin I of Belgium, a naming that reflects Aachen's long historical ties to the Belgian royal house. From the upper section, visitors get a view across the rooftops of Aachen's old town. Opening hours and access can vary, so checking in advance is advisable.