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.
Theodoli Chapel (Santa Maria del Popolo)
The completion of the Theodoli Chapel could be placed around 1575 because Mazzoni returned to Piacenza in the next year. The chapel was refurbished by Marquis Girolamo Theodoli about 150 years later. The large stucco cartouche above the entrance arch with the coat of arms of the Theodoli family probably belongs to this phase. The paintings were restored and refreshed by Giacomo Triga, the court painter of marquis. The 18th century redecoration is probably related to the Jubilee Year of 1725 but the intervention did not significantly alter the 16th century aspect of the chapel.