Many Muslims live in Tower Hamlets and Newham the most important Muslim edifice is London Central Mosque on the edge of Regents Park.

A short video on the Tyburn Tree, the site of the old gallows in London, by author Brian Kavanagh.
http://beekayvic.tripod.com

Marble Arch and Wellington Arch, at the north and south ends of Park Lane respectively, have royal connections, as do the Albert Memorial and Royal Albert Hall in Kensington.