The gallery of the UBA is built on an area of 1200 square meters. The height of the building with the basement is 24 meters and the surface part is 20 m or 5 floors with a total exhibition area of 3970 square meters. This is a unique building for its time, realized for the first time in Bulgaria in a new technology. The original structure was designed by the architect Ivanko Kavalov and engineer Ivan Nikolov. The construction was carried out by "Kremikovtzi" construction plant. On December 12, 1972 UBA gallery was formally launched, quite in the spirit of the times and the political correctness, by a huge art exhibition dedicated to the 90th anniversary of Georgi Dimitrov’s birth.