What is there to do in London?

Question

I am traveling to London in July and I already purchased tickets to see The Lion King at the Lyceum Theater and I'm taking a tour to Herrod's, but what else is there to do that I simply cannot miss whils I'm there? By the way, I'm also going on a cruise of the Baltic Sea and stopping in Berlin, Amsterdam, Estonia, Helsinki and St. Petersburg, Russia. Any iseas as to what I should see in any of these ports?

Answer 1

Berlin doesn't have a port large enough for cruise ships - have a look at any map - it is 2.5 hours drive from the Warnemuende Cruise ship port.

Answer 2

In London you can hold the umbrella.

Answer 3

Harrod's is just a department store with tacky decor and overpriced merchandise.  There are far more interesting places in London - the British Museum, the Tower of London, the National Gallery, the Hampton Court Palace, the Museum of London.