It was a swamp!
1830
The one in Denmark
William the Conqueror built the Tower of London on the site of an existing fortress which had been there for at least 1000 years before he arrived. That fortress was built to protect London from attack.
To defend London, was built by William the Conqueror It was built as his home in London.
London is built on clay, not on a rock.
In london
There were (and still are) other bridges that can be used.
The cenotaph was built in Whitehall, in London after WWI.
The London Wall was first built by the Romans.
london was built upon clay and not rock
London
London