Ballerup Super Arena (formerly Siemens Arena) is a multi-purpose indoor arena, in Ballerup, Denmark. The velodrome has a seated capacity of 6,500. During concerts, the arena can accommodate an audience of up to 9,200. It is owned by Ballerup Municipality. The arena is also a venue for many company events, conferences, team building events, trade fairs, company sports events and cycling events. The arena was opened in 2001. In 2003, the roof collapsed, as a result of a miscalculation in design and the new roof was reinforced with cables. It's the only international indoor velodrome in the Nordic countries.