The home of the Dukes of Wellington, Apsley House at Hyde Park Corner is known as Number One London because it was the first house encountered after a ride through the fields of Knightsbridge. In fact its postal address is 149 Piccadilly. When the 7th Duke gave the house to the nation in 1947, the family retained the private rooms, which they still use today. Apsley House is the last great surviving London town house – and the only house managed by English Heritage in which the original owner’s family is still alive. A banquet is held there on June 18 every year to celebrate Wellington’s victory over Napoleon at Waterloo in 1815.