The Monastery of Fonte Avellana is situated on the wooded slopes of Mount Catria (1701 m.) at 700 meters above sea level in Serra Sant'Abbondio. It dates back to late tenth century, around 980, when several hermits chose to build the first cells of a hermitage, that later became the present monastery. The spirituality of these hermits was influenced by San Romualdo from Ravenna, the father of the Camaldolese Benedictine Congregation. He lived and worked between the tenth and the eleventh century near Fonte Avellana. Today the monastery includes a large square that gives access to the church in Latin cross, covered with barrel vaults with pointed arches; the crypt built in the eleventh century is one of the oldest parts, along with the cloister and the thirteenth century scriptorium. Among the valuable volumes housed in the monastery, notworthy is the NN code dating back to the eleventh century. The prestigious Library "Dante Alighieri" contains over 10,000 volumes, including precious manuscripts and ancient holy books. The hospitality of individuals or groups is provided throughout the year.  In Fonte Avellana there are meetings of Lectio Divina and retreat days.
The Monastery of Fonte Avellana joins the project the Monasteries of the Marche.