Hidden beneath the medieval streets lies a silent, millenary world carved entirely into the volcanic tuff rock. This "underground city" features a labyrinth of over 1,200 caves, tunnels, and cisterns that trace 2,500 years of history—from mysterious Etruscan origins to the ingenious olive oil mills of the Renaissance.

It is a journey through time where the darkness of the caves meets the echoes of daily life from centuries past.