Is it a hotel in a monestery? In a cave? In a series of tunnels? Actually, Argos in Cappadocia is a bit of all three. Set in the breathtaking Pigeon Valley, this singularly unique hotel features 42 rooms, suites, and "splendid" suites spread out through five different mansions, ranging from 15 to 93 square meters, with the largest offering their own private cave pools. Also on site are a restaurant, lounge, and wine cellar, which is housed in a five-and-a-half kilomter tunnel that's also home to lavish meeting rooms. Add in outstanding service and fantastic views, and you have something truly special.