In the center of the village is the small parish church of Santa Maria, built in the 1200s and almost entirely rebuilt in the 16th century.
There are some lovely works of art inside worth pointing out: paintings from the 16th and 17th centuries, a carved walnut wood pulpit, and a triptych with a gold background from the 15th century.
The importance of this church is due to the fact that the remains of the Blessed Giolo are kept here in a gold metal urn placed near the altar; the devout hermit lived in the 13th-14th century and later became the patron saint of Sellano.