Santa Maria del Popolo
Soon after its transfer to the prestigious Lombard Congregation Santa Maria del Popolo was reconstructed between 1472 and 1477 on the orders of Pope Sixtus IV. This was part of the ambitious urban renovation program of the pope who presented himself as "Urbis Restaurator" of Rome. The medieval church was entirely demolished and a new three-aisled, Latin cross shaped basilica was built with four identical chapels on both sides, an octagonal dome above the crossing and a tall Lombard style bell-tower at the end of the right transept. The result of this reconstruction was an early and excellent example of Italian Renaissance architecture in Rome. In spite of the many later changes the basilica essentially kept its Sistine form until today.
Santa Maria del Popolo
The new high altar for the icon of the Madonna was commissioned by Cardinal Giuliano della Rovere, the nephew of the pope, or Cardinal Rodrigo Borgia in 1473. Another relative, Cardinal Domenico della Rovere bought two chapels on the right side. He transformed the first one into a funeral chapel and sold the other one to Cardinal Jorge da Costa in 1488. The next papal family, the Cybos furnished the second chapel on the right in the 1490s, and also the third chapel on the left, while the third chapel on the right went to another cardinal-nephew of Pope Sixtus, Girolamo Basso della Rovere. In the first chapel on the left a confidant of the pope, Bishop Giovanni Montemirabile was buried in 1479. Another confidant, Cardinal Giovanni Battista Mellini was buried in the third chapel on the left after his death in 1478. The two artists most closely associated with this period of the church were the sculptor Andrea Bregno and the painter Pinturicchio.