The Abbey of the Holy Spirit at Morrone (Italian:Abbazia di Santo Spirito al 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
The site has carried a number of names, Abbazia di Santo Spirito al Morrone with its church of Santo Spirito; Badia Morronese; or the Abbazia di Santo Spirito a Sulmona.
The first buildings at the site arose by 1293, and were both enlarged over the centuries and devastated by earthquakes in 1456 and catastrophically in 1706. This led to major reconstruction in the present Baroque-style.
With the Napoleonic suppression of the monastic orders, in 1807 the convent became host of the Collegio dei tre Abruzzi and an Ospizio di mendicità (poorhouse), till it was made into a prison until well into the 20th century.
After the 1706 earthquake, the church (Italian:chiesa di Santo Spirito a Morrone) was built anew an undulating facade with broken friezes, inspired by Francesco Borromini's church of San Carlo alle Quattro Fontane in Rome, was added to the church of Santo Spirito a Morrone. The local design is attributed to Donato Rocco. This facade has a clock (1730) added to the tympanum. The bell-tower was originally built in 1596 and based on that of the church dell'Annunziata in Sulmona.