Bunker 18 AS is a center for civilian activities in Trondheim, established in a building that was built in 1943 as an administration bunker for the submarine harbor at Dora. The building has a historical significance and contains storage rooms as well as simple sanitary rooms. It also has an external stair access to the roof, where there are historic cannon positions, giving a unique perspective on the building's past.
The building's exterior and main internal structure are listed, which helps preserve its historical value. Bunker 18 AS offers long-term rental of rooms, which can be used for storage, music and art purposes. It is important to note that no public events are organized on the premises.