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.
Santa Maria del Popolo
Finally liberated from the demons, that corner of Rome could be devoted to Christian worship. Paschal II, to the sound of hymns, placed the first stone of an altar at the former site of the walnut tree. This was incorporated into a simple chapel which was completed in three days. The construction was celebrated with particular solemnity: the Pope consecrated the small sanctuary in the presence of a large crowd, accompanied by ten cardinals, four archbishops, ten bishops and other prelates. He also granted the chapel many relics and dedicated it to the Virgin Mary.