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Everyone knows about London Bridge moving to the States. Most people are aware that Marble Arch was formerly outside Buckingham Palace, and that the Crystal Palace hopped from North to South.

But a Christopher Wren church in Missouri? Part of the House of Commons in Belsize Park? Next to a section of old Waterloo Bridge? Who knew?

Thankfully, Londonist keeps a watchful eye on the city's buildings. The itinerant structures have been mapped for your perusal. Blue lines represent whole buildings, red lines show parts of buildings. Click on markers for images (in most cases).

Please let us know in the comments if you have any additions or corrections.