St Margaret's Church, Westminster built
1050 CE.
Shown on the map at 51.500°, -0.127°.
The Church of St Margaret, Westminster Abbey is an Anglican parish church in the grounds of Westminster Abbey on Parliament Square, London, England. It is dedicated to Margaret of Antioch, and forms part of a single World Heritage Site with the Palace of Westminster and Westminster Abbey.
Text from the Wikipedia article St Margaret's, Westminster, licensed CC BY-SA 4.0.