Denmark's oldest radio station København Radio OXA.

Built in 1908 at the naval dockyard on Frederiksholm, Holmen, the building accommodated Denmark's first real Coastal radio station with the callsign OXA. The radio station served the Royal Danish Navy as well as the merchant fleet until the late 1940s, and the building is considered to be a witness and a unique monument of the pioneers of the wireless communication.

The former radio station was moved in 2003, and reopened as a museum of Denmark's oldest coastal radio station.