1 Best Sight in Canary Islands, Spain

Because Puerto de la Cruz has uninviting black-sand beaches, the town commissioned Lanzarote artist César Manrique in 1965 to build Costa Martiánez, a forerunner of today's water parks. It's an immense, and immensely fun, public pool on the waterfront, with landscaped islands, bridges, and a volcanolike fountain that sprays sky high. The complex also includes several smaller pools and a restaurant-nightclub.