The Open Guide to London: the free London guide - Differences between Version 3 and Version 2 of Architecture
Contents are identical

The architecture of London
The oldest buildings in London still standing are over half a thousand years old, or in the case of ruins such as London Wall, almost two thousand years old. Cleopatra's Needle is thirty-five centuries old, but it was imported from Egypt.
London has a number of shiny forthcoming buildings.
- You can get a comparative diagram of London's tallest buildings here (city: London, country: United Kingdom).
 
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