The buildings comprise the former nuclear missile bunkers & igloos for the former Greenham Common Airbase.
The bunkers are constructed of concrete with steel doors and are considered to be highly secure. They measure 150' long x 15' high x 15' wide.
The igloos comprise again concrete structures with doors to one end. The eaves height is 3.8m internal with door size 2.96m wide x 2.98m high
The bunkers occupy part of a site which again is secure with quadruple fencing.