Apartment Building 63, also called Commune 63 (Romanian Comuna 63) is an apartment building located in the Dristor neighbourhood in the south-eastern part of Bucharest (Sectorul 3) and it is the largest single residential building in Romania[1] with a total of 950 one-room apartments, and holding just over 1,600 residents,[2] although up to 2,500 people may be living there.[1] The building is nicknamed the commune because of the large number of apartments that could house an entire village or commune, and because of the long corridors that stretch from one end of the building to the other and resemble a long country road.[2] The apartment building has four staircases of 10 floors each and is built in the shape of a giant Z with an extension in the southern part of the structure.[2] It is located near the Dristor metro station, a major node of the Bucharest Metro's railway network.[2]