The basement of the building contains the rather spartan apartment of Ernie and Bert, as well as the laundry room. There is also an access to the area beneath Oscar's trash can. The ground floor is home to Gordon, with his wife Susan and son Miles, until Season 46 when Elmo moved into that place. Gordon and Susan appear to be the owners of the building. The top floor is home to Luis with his wife Maria and daughter Gabi. Originally Gordon's sister Olivia lived in the top floor apartment, but she moved away when Maria and Luis got married. With its big fireplace, the upper apartment is a favorite gathering place during cold weather and blackouts. The roof of the building is where Bert keeps his pigeon coops. It is also a favorite gathering place for social events such as weddings and sing-a