Gorgeous views of Parliament, The Bank of England, The Tower Clock, Westminster Abbey and you can walk along the Thames from this location as well. The perfect photo stop for all the "big" attractions.
Piccadilly Circus in London, Greater London - The most busy square in the heart of London. Famous for the fountain and the huge neon billboards. If you go there, you can walk down the Haymarket Street, which is famous for the theaters situated there.