The Chapel of Our Lady of the Sacred Heart of Jesus, affectionately known as "La Cappelletta," was built in the late 1800s out of devotion by Rubina Antonellis. This small church was officially blessed on May 18, 1892 by the Bishop of Sora, Monsignor Raffaele Sirolli. Its construction represents a symbol of faith and devotion for the community of San Donato Val di Comino.

Located on the edge of the built-up area, precisely at Via Piave 134, the Chapel is located along the road leading to the Lazio-Abruzzo border. Its strategic location makes it a landmark for anyone traveling this route. Despite its small size, the Chapel is a place of great spiritual and community importance.

The Chapel of Our Lady of the Sacred Heart of Jesus is especially active during the month of May, when it hosts the Marian Rosary, a time of prayer deeply felt by the faithful. Throughout the year, and especially in the summer, the little church becomes a place for gathering and contemplation. After a walk, visitors often stop in front of the Chapel to converse and enjoy a quiet moment away from the hustle and bustle of the central square.

Despite its small size, the Chapel is an architectural jewel that reflects the devotion and love with which it was built. Its simple but elegant facade, combined with the serenity of the place, offers an atmosphere of peace and recollection. The cozy and intimate interior invites prayer and meditation, making it a spiritual refuge for anyone who enters.