Bagni della Regina Giovanna is a natural sea pool formed where a Roman villa's harbour cut into the limestone cliffs at Punta del Capo, 3 kilometres west of Sorrento. The Roman villa — a patrician residence from the first century BC — sits in ruins around the pool, its arched walls and stone platforms still partly visible above the waterline. The sea enters the pool through a natural arch in the rock, keeping the water clear and relatively calm even when the open coast is rough.
Getting there requires either a 20-minute walk along Via del Capo (the clifftop road heading west from town) and then a path down through the ruins, or a water taxi from Marina Piccola. There are no facilities. The swimming is excellent in calm weather; the walk through the Roman ruins to reach the water adds considerable atmosphere. The site is free to access and rarely overcrowded outside August, when it becomes one of the better-known swimming spots on the peninsula.