The initiative behind Certosa’s yacht marina now embraces a fully fledged sustainable-tourism project, with a sailing school, a yoga centre, public nature trails and a restored 15th-century charterhouse for educational programs. To accompany it, an 18-room hotel offers a range of sailing, kayaking and cycling packages and an alfresco restaurant-bar. It's a great place to escape the crowds on a hot summer day, and share a drink with the sailing fraternity on the patio of the Il Certosino .