The St. Nicholas Hangar Museum Site, located in the fisrt settlement on Büyükada, is situated on a 1100m2 site.

The 700 m2 enclosed area, permanent exhibition galleries of 400m2, a temporary exhibition hall of 225m2, as well as a museum shop, workshops, café, storage areas, archives and offices.

An additional open area of 400m2 is used to host various cultural activities, meetings and as an open exhibition area. The St. Nicholas Museum Site was opened on 10th September 2010, after 5 months of restoration work on the helicopter hangar Permanent exhibitions of the museum are housed here. During the first months of 2011, the permanent exhibition site began to be enlarged, and a new temporary exhibition area, storage area, Office and social areas were added.