Punta Epitaffio

Drop anchor here to float above one of the most surreal archaeological sites in Italy — a Roman nymphaeum submerged about 7 metres underwater, built during the reign of Emperor Claudius and now part of the Parco Sommerso di Baia off the Campanian coast. It's eerie and fascinating in equal measure: with the right conditions and a snorkel or dive setup, you can peer down at ancient statues and mosaic floors that have been lying on the seabed for centuries. There's no infrastructure here, just open water and history beneath your hull.