Santa Maria del Popolo
The architect or architects of this innovative project remain unknown due to a lack of contemporary sources. Giorgio Vasari in his "Lives" attributed all the important papal projects in Rome during Sixtus IV to a Florentine, Baccio Pontelli including the basilica and monastery of Santa Maria del Popolo. Modern researchers deemed this claim highly dubious and proposed other names among them Andrea Bregno, a Lombard sculptor and architect whose workshop certainly received important commissions in the basilica. The fundamental differences between the façade and the interior suggest that maybe more than one architect was working on the building.
Della Rovere Chapel (Santa Maria del Popolo)
The Della Rovere or Saint Jerome Chapel, otherwise the Chapel of the Nativity () is the first side chapel in the south aisle of the Basilica of Santa Maria del Popolo in Rome. It was dedicated to the Virgin and Saint Jerome and decorated with the paintings of Pinturicchio and his pupils. It is one of the best preserved monuments of quattrocento art in Rome.