The Saltwater Sauna

Corfe Castle

National Trust castle ruin on the Isle of Purbeck, between Wareham and Swanage.

Chapman's Pool

Worth Matravers

A secluded horseshoe cove, a 45-minute walk from the free car park at Renscombe Farm past Worth Matravers village. Swim in the cove, not the open sea beyond it — currents outside are dangerous, no lifeguard or facilities.

Seacombe

Worth Matravers

A rocky cove and former quarry about ¾ mile from Worth Matravers on foot, a steep 400ft descent. Old quarry workings are fenced off; easy foreshore access for swimming and snorkelling. Dogs allowed at all times.