It is the former episcopal seat of the Diocese of Cervia and since 1986 has been a co-cathedral of the Archdiocese of Ravenna-Cervia.
The bishop Francesco Riccamonti began construction in 1699 of the Baroque structure, which in 1702 was consecrated and dedicated to the Assumption of the Virgin Mary (Santa Maria Assunta).
The church is adjacent to the Bishop's palace (1702) and in 1750 was connected to the bell-tower.
There is also a St Joseph and Child Jesus by a follower of Guercino.
The main altar in polychrome marble is derived from the deconsecrated church of San Domenico in Forlì, has an altarpiece depicting the Madonna of the Assumption between Saints Nicola and Bartholomew, by Giovanni Barbiani.