Building the event hall Jahrhunderthalle in Bochum Westpark in District Stahlhausen in Bochum in North Rhine-Westphalia, Germany. The hall has been extended several times, the name Jahrhunderthalle is now used for the entire building, which covers an area of 8,900 square meters. Since the restoration of 2003, the hall for various events will be used: Ruhrtriennale, opera, exhibitions, rock-, pop-, classical- concerts