Big Ben, Tower of London, Houses of Parliament, Buckingham Palace, the Gherkin, the London Eye
There are thousands of buildings in London dating from 1800 and earlier.
In the Tower of London there are ruins of Roman London so they are some of the oldest buildings/ruins in the city. The Tower itself has parts that are very old. Through out the city of London there are other bits and parts of Roman London.
2
Yes
Parliament Buildings, London
The buildings in London depend very much on the area, some buildings are old fashioned (like the area near South Kensington), whereas near the docklands of London (near Canary Wharf), the buildings are much more modern.
Of course, they have to be!
Houses of Parliament
Buckingham Palace. The Tower of London. St. Paul's Cathedral.
big Ben the London eye and Buckingham palace
Big Ben, Westminister Abbey, the River Thames and thousands of other buildings.
tower of London ....