The Caves of Gargas in the Pyrenees region of France are known for their cave art from the Upper Paleolithic period - about 27,000 years old. The caves are open to the public.
Wikipedia https://en.wikipedia.org/wiki/Caves_of_Gargas
Address Route de Gargas, 65660, France
Coordinates 43°3'20.055" N 0°32'10.639" E