 Ratcheugh Observatory

Ratcheugh Observatory is a folly building constructed in the late 18th century on a prominent crag between Alnwick and Longhoughton in north Northumberland, England.Commissioned by Hugh Percy, 1st Duke of Northumberland, the Observatory is castellated in appearance, and incorporates a viewing tower with prospects of Alnwick and its castle, and of the North Sea coast at Boulmer.