Cambridge, JUL 10: Exterior view of the Wren Library on JUL 10, 2011 at Cambrdige, United Kingdom; Shutterstock ID 1649403115; your: Bridget Brown; gl: 65050; netsuite: Online Editorial; full: POI Image Update

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The renowned Wren Library contains 55,000 books published before 1820 and more than 2500 manuscripts, including AA Milne's original Winnie the Pooh. Both he (Milne that is, not Winnie) and his son, Christopher Robin, were graduates.

The Wren Library sits inside magnificent Trinity College.