Since 2011 its artistic testimonies have been registered in the UNESCO World Heritage.
Every monument of the city deserves to be seen: from the Longobard Temple, located inside the Monastery of Santa Maria in Valle, to the Ponte del Diavolo, symbol of the town. Worthy also of note is the Celtic Hypogeum, located under a house, and is a complex of artificial, underground caves dug out of rock, inside which there are masks carved in stone that represent probable remains of Celtic funerary art. The Cathedral, built in 1457, houses one of the masterpieces of Italian medieval goldsmithing: the silver Pellegrino II altarpiece.