The grey housing block facing the Kremlin, built in 1931 for the Soviet elite. During the Great Terror people were taken from it at night: of roughly five hundred flats, more than a third were touched by the purges, and some changed occupants several times over. The legends follow from that — staircases with no numbers on the doors, rooms nobody moved into for years, footsteps along the corridors of empty floors. Residents said they heard furniture being moved in the flat next door at night, when nobody lived there. It is still considered the bleakest residential building in Moscow, and it is the case where the ghost story grew straight out of the documented history.