Ever wanted to live in a tower by the sea? Well now you can, with Mermaid’s Keep. Yep – this is an actual 16th century watchtower, converted in the early 20th century by an artist who clearly had an eye for a great view. The terraces offer opportunities for sun-worshipping from every angle – or, if you’re feeling more active, descend the private stairway to the ocean itself. Another big draw is the dining area lined by stone arches, with views onto the sea and the town of Positano. Beyond the keep, the fishing villages, hiking trails and peerless beaches of the Amalfi Coast await.