5. Lascaux Caves – France
This complex series of caves, located in Northwestern France, is home to one of history’s most famous examples of Paleolithic cave paintings ever discovered. The ancient artwork is believed to be over 17,000 years old and depicts mostly images of large animals that have been proven through fossil excavations to have been living in the area at that time. The caves are even listed as an UNESCO World Heritage Site. However since 2008, the caves have been completely closed off to the public following a fungal outbreak, with only a small handful of scientists allowed to enter for just a few days a month in order to study the paintings.
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