Café Hahn is situated within the historic Festung Ehrenbreitstein, offering a unique setting for a variety of events. The venue features several spaces, including the large Kuppelsaal with over 500 square meters and a striking view over Koblenz, suitable for large gatherings and concerts. The Festungskirche serves as an intimate location primarily for weddings but also hosts other functions like concerts and comedy shows. The Restaurant Casino and Cantina provide more enclosed options, combining historical architecture with cozy atmospheres, and are suitable for celebrations such as birthdays and corporate events. Additional spaces like the Oberer Schlosshof and Retirierter Graben extend the event capacity outdoors for larger festivals, concerts, and public viewings. Each venue offers a distinctive ambiance, supported by facilities and services tailored for both professional and private events.