Dismantled stone by stone from its perilous clifftop perch, Clavell Tower - a 19th-century folly immortalised by Thomas Hardy and the crime novelist PD James - has been reopened.

The turret above Kimmeridge Bay in Dorset was threatened by shoreline erosion and was in imminent danger of toppling into the churning ocean below. It has been saved by being rebuilt 25 metres (82ft) inland.

The monument was constructed for the Rev John Richards Clavell in 1830 as an observatory and folly, with four storeys, including a basement, and a Tuscan-style colonnade.

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