The Abbey of Santo Spirito al Morrone has represented for centuries the most important and famous settlement of the Celestine Congregation as well as the hub of cultural, religious, and civil life of a vast territory. The monumental complex, which covers an area of 16,600 square meters, is located just 5 km from the center of Sulmona in the Badia area, in the foothills of Morrone, in a territory dedicated to sacredness since ancient times and always in dialogue with the nearby hermitage of St. Onofrio, a favorite refuge of Brother Pietro, and with the imposing Sanctuary of Ercole Curino. The origins of the Abbey are linked to the figure of Pietro di Angelerio, a Benedictine monk, hermit, founder of the Celestine order, and Pope under the name Celestine V. It was he who began its construction, probably expanding the small church of Santa Maria dating back to the first half of the 13th century and then promoting the construction of a new church dedicated to the Holy Spirit with an attached Monastery. In addition to guided tours, the Abbey hosts conferences, exhibitions, and concerts that are transforming the complex into a cultural hub.