Fodor's Expert Review Le Grotte Bizantine di Sperlinga

Thought to be originally from the Byzantine period (although their exact history is still unknown), these caves carved out of stone can be found in and around town. They were originally used as burial sites, but then eventually became homes, although how or why is still a mystery. They were actually still inhabited up until the 1960s. Today the curious tiny houses are open to the public, and those closest to town have been turned into a museum by the local government.