The core activity of the Bider Foundation is the preservation and promotion of cultural and historical values, particularly in the fields of aviation and art. The foundation restores and maintains historic aircraft, such as the Nieuport replica, and has a hangar at the airfield. In addition, the foundation collects and presents artworks, such as Leny Bider's painting 'Lady in a Green Coat'. The foundation is also committed to the preservation of historical monuments, such as Bern-Belp Airport.