Cappella Colleoni

Dedicated to the saints Bartholomew, Mark and John the Baptist, it was built between 1472 and 1476 as the personal shrine for the condottiere Bartolomeo Colleoni, a member of one of the city's most notable families, and his beloved daughter Medea.

The design was entrusted to Giovanni Antonio Amadeo, whose plan respected the style of the church, as can be seen from the octagonal tambour of the dome and in the lantern cusp, as well as in the use of polychrome marbles.

The upper part of the basement has nine plaques with reliefs of biblical stories, and four bas-reliefs depicting the labors of Hercules.

The presbytery has a high altar sculpted by Bartolomeo Manni in 1676, housing statues of the three saints to whom the chapel is dedicated—John, Mark, and Bartholomew—by Pietro Lombardo.

Notable are the frescoes of the dome, depicting Episodes of the Lives of St. Mark, John the Baptist and Bartholomew, executed by Giambattista Tiepolo in 1732–1733.