Santa Maria del Popolo instance of church building
Nave
The church of Santa Maria del Popolo is a Renaissance basilica with a nave and two aisles, and a transept with a central dome. The nave and the aisles have four bays, and they are covered with cross-vaults. There are four piers on each side that support the arches separating the nave from the aisles. Each pillar has four travertine semi-columns, three of them supporting the arches and the vault of the aisles while the taller fourth supports the nave vaults. The semi-columns have Corintianesque capitals with a palmette ornament between the scrolls. There are subtle differences between the capitals in the type of the palmette and the fleuron. Unlike the column shafts, the capitals are still coated with plaster.
The original 15th-century architecture was largely preserved by Bernini who only added a strong stone cornice and embellished the arches with pairs of white stucco statues portraying female saints. The first two pairs on the left and the right are medieval monastic founders and reformers, the rest are all early Christian saints and martyrs. Their names are written on the spandrels of the arches with gilt letters. The cross-vaults remained undecorated and simply whitewashed. The keystones in the nave and the transept are decorated with coats of arms of Pope Sixtus IV. The Della Rovere papal escutcheons were also placed on the cornice of the intrados in the first and the last arches of the nave. These stone carvings are gilt and painted. The nave is lit by two rows of large segmental arched clerestory windows with a simple Baroque stone molding and bracketed cornice. Before the Berninian rebuilding the clerestory windows were the same mullioned arched openings like those on the facade and the bell tower.
The nave ends with a triumphal arch that is decorated with a sumptuous stucco group which was created during the Berninian reconstruction. The papal coat of arms of Alexander VII is seen in the middle flanked by two angel-like Victories holding palm branches who repose on rich garlands of flowers. This group is the work of Antonio Raggi. It should be noted the nave and the transept had a more unified Baroque appearance before the purist restoration of Antonio Muñoz in 1912. He removed the thick plaster coat from the shafts of the travertine half-columns that was painted to create an appearance of cipollino marble. Another lost Baroque feature was created by Giovanni Maria Mariani whose name was mentioned regularly in the payments between 1657 and 1658. It is not possible to reconstruct his work in the basilica but he was a specialist of sumptuous ornamental friezes with great figures, festoons and grisailles. Presumably he was tasked with the seamless integration of the real and painted sculpture in the nave and the transept.
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