Dewstow House

Dewstow House, Caldicot, Monmouthshire, Wales, is a Grade II listed building[1] notable for its "network of very rare and unusual underground gardens"[2] constructed in the late nineteenth and early twentieth centuries.

The house is a "simple three-bay villa"[3] with extensive views over the Severn Estuary. Within the grounds lie one of the most extraordinary gardens in Britain, "a network of underground passages and top-light chambers with artificial rock-work and stalactities."[3] The garden structures have three separate Grade II* listings as a result of their importance.[4][5][6]