Costa Chapel

The small chapel is hexagonal with a sexpartite ribbed vault and the entrance is protected by an elegant marble parapet which is decorated by garlands, ribbons and patenas.

The side walls are articulated by painted Corinthian pilasters decorated with candelabra, flowers and garlands on a yellow background, resting on a fake monochrome pedestal.

The central lunette is filled with the sculpted coats-of-arms of Cardinal Costa (the wheel of St Catherine) which is supported by two painted angels.

The tripartite marble reredos is articulated by Corinthian pilasters and crowned by an elaborate pediment with the figure of God, the Father.

There are three sculptures of saints in shell-headed niches: St. Catherine of Alexandria in the middle (with the wheel), St. Vincent (with the ship) and Anthony of Padua (with a lily).

The funeral monument of a young Roman knight, Marcantonio Albertoni, who died in a plague at the age of 30 in 1485, covers the right wall.

The inscription on the sarcophagus declares that "Giorgio, bishop of Albano, cardinal from Lisbon, while he turned over in his mind that he was mortal, erected [this tomb monument] for himself while still alive".

[3] The third original monument is the tombstone (in the floor) of Archbishop Giorgio Bracharin by the workshop of Antonio del Pollaiuolo (end of 15th century).

A white marble slab was set under the other window in 1830 for Eugen von Ingenheim, the one-year old infant son of Count Gustav Adolf Wilhelm von Ingenheim, the morganatic son of King Frederick William II of Prussia, who converted to Catholicism.

The prelate wears a richly folded robe, gloves, boots and a particularly sumptuous mitre which all serve to emphasize his dignity.