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The Tower of London isn't for sale.
The Tower of London still has a small military garrison.
£3000
They are about the same length but London Bridge is much wider.
There are a number of different hotels local to this destination. These are depending on your needs, how much money you have and how many people are in your party. If you want the slightly cheaper option then maybe consider the Tower Bridge hotel or Burmondsey street. For somewhere possibly a bit more upmarket (or so some websites claim!) maybe consider London Bridge apartments. These are all within 15 minutes walk from London bridge.
The price varies. Check their website.
The tower of London doesn't pay any tax because its a Crown property and Her Majesties Revenues and Customs do not tax themselves.
London Eye, Big Ben, Houses of Parliament, St Thomas Hospital, London Aquarium, Tower of London, Tower Bridge, City Hall, HMS Belfast, Westminster Abbey and much more.
Check their website for current admission charges
---- £16.50 for an adult ticket and £9.50 for children ---- ----
The exact weight of the Tower of London would be impossible to say since it cannot be physically weighed. There was more than 11,000 tons of concrete used to build the original castle.
100% because of hill billies