The Landesmusikakademie Nordrhein-Westfalen (North Rhine-Westphalia State Music Academy) is an organiser of further and advanced training courses and an educational institution with guest rooms and full board as well as a concert and rehearsal venue. It manages eight buildings spread over the Landesburg zu Nienborg and the town of Heek-Nienborg. The centre of its work is the barrier-free music centre, which houses the large concert hall. The Landesburg zu Nienborg was built in 1198 by Prince-Bishop Hermann II zu Katzenelnbogen, and the Academy uses one of three preserved historic houses for courses and events. This so-called Lange Haus was built in 1554. The public sound garden, which houses the permanent sound objects from SOUNDSEEING V, belongs to this building.