I can watch the changing of the Guard at Buckingham Palace.
I can see the Crown Jewels at the Tower of London.
I can feed the pigeons at Trafalgar Square.
I can see a very large clock at the top of a tower at the north end of the Palace of Westminster.
I can listen to concerts of classical music at the Royal Opera House.
I can listen to a speaker talking to the public at Hyde Park.
I can do some shopping on Oxford Street.
I can see collections of English and European pictures at the National Gallery.