The façade was rebuilt entirely in white limestone by Camillo Guglielmetti in a faithful neo-Classical style, 1857-1862. Two Corinthian columns, in the round and detached, support a high, horizontal and shallow monumental porch with a deep entablature. The first storey cornice mentioned above runs around the top of this, and on top is an elaborate papal coat-of-arms. Either side of the entrance on the first storey frontage is a pair of recessed blank panels, a narrow horizontal rectangular one over a large vertical rectangular one.