Where is an interesting place/museum/monument to go in London for a non-traditional tourist?

If you like Asian food you could (uming its Heathrow Airport you are landing at), take a 105 bus from the central bus station to the Southall area which is London's largest Asian area and is full of excellent Asian restaurants. Kew Gardens, the Royal Botanic Gardens Kew www.kew.org would also be an excellent place to visit