The London Eye makes approximately £2.5 million per year!
This is a commercial secret and does not seem to be available on the internet.
The Related Link gives some details of its construction.
9 dollars
4
No, they had nothing to do with it.
stone
the Eiffiel tower got $100,00000
you can't
Mostly a tourist attraction to make money.
Around 6,700,000 in a year, it varies little though.
6 billion
Mostly a tourist attraction to make money.
it costs $50 to get into the Tower of Pisa
King Charles II was told of a legend that if the ravens ever leave the Tower of London, the White Tower, the monarchy, and the entire kingdom would fall. So Charles decreed that thay should stay.They are kept by a Ravenmaster and their wings are clipped to make sure that they stay.See the Related Link.
2.5 million pounds a year
The answer is none. The London Dungeons is the name given to a tourist attraction in Tooley Street in London. It's a stage set which aims to make you feel as if you are in a medieval dungeon. If you mean the dungeons at the Tower of London, nobody really knows for sure (There are some records but they are not complete), but perhaps the most famous was Mary Queen of Scots. She was beheaded in the grounds of the Tower in 1587.