Go back in time at Le Grotte della Civita, one of the world's most unique hotels, set in the troglodytic town of Matera.  Inhabited since prehistoric times, these remarkable underground spaces include rock-hewn churches and many half-carved, half-built dwellings looking out onto the arresting Gravina torrent. But unlike the previous inhabitants, you'll also find these rather elegant egg-shaped baths resting in the corner of your room, the perfect spot to admire the vaulted rock ceilings and soak up the incredible ambiance of these cavernous cave dwellings.