Cascia () is a town and comune (municipality) of the Italian province of Perugia in a rather remote area of the mountainous southeastern corner of Umbria.
It is about 21 km from Norcia on the road to Rieti in the Lazio (63 km).
History
Antiquity
Archaeological evidence indicates that the area of Cascia was inhabited from ancient times, as shown by the discovery of hypogeal tombs cut into rock on the left bank of the river Corno, dating to the 2nd century BC and containing various funerary objects.
According to the scholar Theodor Mommsen, the territory of Cascia in antiquity belonged to that of Norcia, and inscriptions referring to municipal institutions found in the area should be attributed to that city.
The town is crossed by the river Corno, whose name derives from the winding course of its bed.
In 2021, 204 people lived in rural dispersed dwellings not assigned to any named locality.
The building has a Greek cross plan with apsidal arms and a structure is Byzantine in character, with galleries opening around the perimeter. The high altar, designed by Martinenghi, is decorated with reliefs of the Last Supper by . The furnishings include works by Giacomo Manzù, including the tabernacle and crucifix.