Built on the facade of Palazzo Poli by Nicola Salvi, the competition launched by Pope Clement XII in 1731 was initially won by the French sculptor Lambert-Sigisbert Adam but later the task passed to Salvi: it is said that the change was due to the fact that the Pontiff did not want to entrust the work to a foreigner, instead another version explains that Adam had to return to France.
Begun in 1732, it was finally entrusted in 1759 to Pietro Bracci helped by his son Virginio. The two completed the work, which was inaugurated in 1762.