The Abbey of the Holy Spirit at Morrone , known by various titles, is a former monastery some five kilometers outside of the town of Sulmona, at the base of Monte Morrone, in the Province of L'Aquila, region of Abruzzo, Italy.
The present monastery was built in the early 18th century after an earthquake had nearly leveled the former 13th-century monastery founded by Pietro Angelerio da Isernia, subsequently elected Pope Celestine V. Pietro Angelerio had been a hermit at the Mountain, at what is now the Eremo di San Onofrio in Monte Morrone. For centuries, this was the main abbey of the Celestine order, a Benedictine order offshoot. By the 19th century, the abbey was deconsecrated, functioning more recently as a prison. In the last decades, restoration has proceeded and it now serves as a Museum