7. Matera, Italy
Extensive renovations have led to a renaissance for this 9,000-year-old cave city in Southern Italy. Perched on a rocky outcrop, Matera is made up of stone dwellings and a maze of monasteries, churches, and caves.
The UNESCO World Heritage Site is still somewhat of a hidden gem, but that won't be the case for long. Hotels, restaurants, and bars are popping up in anticipation of Matera's designation as the European Capital of Culture for 2019; all the more reason to plan your trip for 2018.
[Photo via @yallersitalia]