Chiesa di Ognissanti

The Church of Jesus and Mary is a baroque church built between 1633 and 1675. The site and its buildings were purchased by the Discalced Augustinians in 1615, to build their new Roman seat and a training house for seminarians. A first construction period was led by Carlo Buzio and was completed at the end of 1635. A second part was carried out under Carlo Rainaldi, between 1671 and 1674. Between 1678 and 1690 the interior decoration and marble cladding was carried out.

The Basilica of Santa Maria di Montesanto is, together with its twin church, Santa Maria dei Miracoli, the base of the so-called "trident", three streets leading from Piazza del Popolo: from the left, Via del Babuino, Via del Corso and Via di Ripetta. The origin of the churches dates back to the 17th century in what was the main entrance to Rome in the Middle Ages and the Renaissance, via Via Flaminia. Pope Alexander VII commissioned the architect Carlo Rainaldi to design the monumental entrance to the Via del Corso. The project included two churches, but the different configurations of the two available locations meant that major changes had to be made to the plans.

The church of Santa Maria Portae Paradisi was already known in the 9th century as Santa Maria in Augusta, and was given the name Porta Paradisi because one of the gates in the walls of the Mausoleum of Augustus, called paradiseiois, opened nearby, or because the cemetery (closed in 1836 due to the cholera epidemic) of the Hospital of San Giacomo in Augusta, called Incurabili, was located next door. In the 16th century, the church was rebuilt by Antonio da Sangallo the Younger, and took its present name.