Grotta Palazzese. This stunning restaurant was built inside a cave in Southern Italy. The Grotta Palazzese offers gorgeous views over the Adriatic and towers 74 feet above sea level. 15 Astonishing Little-Known Destinations Worth Traveling To - Cappadocia
Iceland's Blue Lagoon The geothermal spa is one of the most visited attractions in Iceland. The steamy waters are part of a lava formation. The spa is located in a lava field in Grindavík on the Reykjanes Peninsula, southwestern Iceland.