Superjednostka is one of the largest residential buildings in Poland and was the largest when it was built in 1972. It is located in Katowice, Silesian Voivodeship, on Aleja Wojciecha Korfantego 16-32 near the Spodek arena complex. The building was designed by architect Mieczysław Król and is inspired by Le Corbusier's Unité d'habitation.