The Oratory of the Blessed Sacrament was built in 1865 as an extension of an earlier one. The church, owned by the brotherhood of the same name, is only opened during special ceremonies.
It contains a painting by Silla Piccinini from 1598 depicting the Last Supper and the Fedeli company organ with small tin pipes, previously in use at the Maria Santissima dei Miracoli Sanctuary.
On the architrave of the entrance door is an inscription in abbreviated script or brachygraphy. Now almost illegible due to the erosion of the pietra serena. The inscription reads: "oratorum societatis corporis Christi".