A guy in a funny hat (Royal Guard)
at Tower of London.
Westminster Abbey,
where many royal people are buried.
Trafalgar Square,
with the monument of Admiral Nelson.
Nelson himself
(another guy in a funny hat). 
Needle of Cleopatra
and a typical London taxi.
House of Parliament
with the Big Ben on the right, seen from across the Thames.
Change of the Guard
in front of the Buckingham Palace (many guys in funny hats). 
Tower Bridge on the river Thames. 
Armor of Henry VIII -
well, he had six wives.
Site of Scaffold
at the Tower of London, where some famous people were executed.