Colleoni Chapel

The Cappella Colleoni is a chapel and mausoleum attached to the Basilica of St. Mary Major in the northern Italian city of Bergamo.

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 site chosen was that of the church's sacristy, which was demolished by Colleoni's soldiers. Whether or not the demolition was authorized by church administrators remains the subject of scholarly debate among Italian historians.

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.