The church of Santa Maria del Quartiere is built on a hexagonal plan. It is supported by arches and pillars covered by a great dome decorated with frescoes by P.A. Bernabei (1626-1629). It was built as a votive offering over the place where the military garrison once stood. Designed by G.B. Galeotti (also known as the Argenta), it was completed by G.B. Magnani and then Pietro Righini. The church contains works of art by F. Scaramuzza, M. Baiardi, G.M. Conti, T. Bandini, F. Pescatori, and G. Gaibazzi.