Designed for the furniture empire Maples during the 1970s, Maple House on Tottenham Court Road is one of Richard Seifert’s least-known buildings. A vast, granite-clad structure covering an entire city block, it had showrooms in a ground floor podium with blocks of offices and residential apartments above. Since Maples folded in 1997, new retailers have moved into the ground floor, and one block has been connected by bridge to the adjacent hospital for NHS use.