Sextantio Le Grotte Della Civita is a one-of-a-kind hotel built into the abandoned caves of Matera, a little-known village in Southern Italy that also happens to be a UNESCO World Heritage site. Built by Swedish-Italian entrepreneur, hotelier, and philanthropist, Daniele Kihlgren, the hotel features 18 rooms that meld traditional design using local materials with just a touch of contemporary finish. . . .