The narrowest building in Poland, and possibly the narrowest in Europe, is the brainchild of Israeli writer Edgar Keret. It was conceived as a memorial to his parents' family, who died in Warsaw during the World War II Holocaust.
The house was actually squeezed in-between two existing central Warsaw residential buildings on the edge of the former Warsaw Ghetto.
Polish architect Jakub Szczesny designed the weird construction, which is still a real house with all the necessary facilities. — rt.com