St. Paul's Cathedral - somehow survived the WWII bombings.
The Old Bailey (below).
The Tower of London (below right).
Last tidbit - we went to Fabric - a nightclub in London. It's supposedly one of the hottest clubs in London - whatever that means. It's located in a Victorian meat cellar - you have to descend a couple of flights. It was a lot of fun and very interesting. "Trance" music is aptly named.