Grange Arch, also known as Creech Folly, is an 18th-century folly that is located near the second highest point of the Purbeck Hills, Ridgeway Hill (199 m), in Dorset.

The folly, which was built by a former owner of Creech Grange, Denis Bond, in 1746, is built in the form of a triple arch of ashlar stone.

The central archway is surmounted by battlements and flanked by stone walls with smaller doorway arches.

[1][2] Today the arch is owned by the National Trust.

[1] English Heritage have designated it a Grade II* listed building.