The church of St. Francis stands on the site of an older church, dedicated to Our Lady of the Assumption in 1149 and donated to the Franciscans in 1255. The friars built a new building in Gothic style, whose nave was remodelled in 1747.It was consecrated in 1149 by Monsignor Aldobrandini.
The bell tower is from 1506. Numerous works of art are preserved in the church, among which the fourteen wooden statues depicting the Apostles and Saints John the Baptist and Joseph, sculpted in 1752 by Giacomo Bulgarini, stand out for their grandeur.
Of particular relevance are the frescoes of the presbytery, painted by Francesco Nasini in the middle of the 17th century and depicting the Death of Saint Anthony of Padua (on the left), the Canonization of the Saint (on the right), the Assumption of Mary (in the centre) and figures of Virtue (on the vault).
In the convent adjacent to the church the cloister has a pictorial cycle on the walls, unfortunately very ruined, with the Life of St. Francis, still by Francesco Nasini.