Orazio Torriani

In 1624 he built the façade for the ancient basilica of San Bartolomeo all'Isola on the Tiber Island, a work commissioned by Cardinal Trescio.

[2][3] American painter John Singer Sargent during a visit to Rome in 1906 made an oil painting and several pencil sketches of this staircase and balustrade writing in 1907: "I did in Rome a study of a magnificent curved staircase and balustrade, leading to a grand facade that would reduce a millionaire to a worm...."[4] The painting now hangs at the Ashmolean Museum at Oxford University and the pencil sketches are in the collection of the Harvard University art collection of the Fogg Museum.

[5] Sargent later used the architectural features of this stair and balustrade in a portrait of Charles William Eliot, President of Harvard University from 1869-1909.

[6] At the church of Santi Cosma e Damiano his project commissioned by Urban VIII Barberini and directed by Luigi Arrigucci, he raised the floor to the current level of the Forum of Vespasian.

An information brochure at the adjacent Palazzo San Callisto states, "In 1618 the Maestri di Strade, or Masters of Roads, issued a license for the construction of the facades of the square (of Santa Maria in Trastevere) and the adjacent street of San Callisto, both to be built by Orazio Torriani."