On Sunday, I did at guided tour about Westminster during World War II.  It was interesting, you can still see the bomb damage in a lot of areas.  London is still freezing, the snow is gone so now it's just cold!  My fingers were numb at the end.

 Trafalgar Square- looking toward Nelson's Column

 St Martin- in the Fields- the crypt was used as a bomb shelter

 Piccadilly Circus (I rarely come here- too many dumb tourists!!)

 Nancy Astor's town house

The only memorial to a Nazi in London- it's the grave of the German ambassador's dog- who was killed just before the war broke out (sorry for the bad photo- my fingers were numb at that point)