Two chapels behind San Lorenzo: the Medici grand dukes' marble mausoleum, and Michelangelo's New Sacristy.
Chapel of the Princes • Michelangelo's New Sacristy • the Medici tombs
Explore the Chapels Get Early AccessEntrance on Piazza Madonna degli Aldobrandini, behind the basilica
Closed some Sundays and Mondays, so check ahead
Two chapels and the treasury reward an unhurried visit
Book ahead. Capacity is limited
Two very different chapels share one entrance behind San Lorenzo. The Chapel of the Princes is the Medici at their most imperial, an octagon lined floor to dome in dark marble and inlaid stone. Next door, Michelangelo's New Sacristy is the opposite, pale and spare, with four of the most famous figures he ever carved. Seeing them back to back is the point.
The New Sacristy came first. Michelangelo began it in 1520 as the Medici answer to Brunelleschi's Old Sacristy across the church, and worked on it for fourteen interrupted years before leaving for Rome in 1534 with parts unfinished. The Chapel of the Princes was begun later, in 1604, for the grand dukes, and its craftsmen kept inlaying stone for generations. The painted dome was only finished in the 1800s.
The Chapel of the Princes was meant to hold the greatest relic in Christendom. The grand dukes spent years trying to buy the Holy Sepulchre itself and enshrine it here. The purchase never happened, the chapel kept rising anyway, and what fills it instead is the pietra dura, colored stone cut into pictures, that became Florence's signature craft.
The octagon the Medici grand dukes built for themselves, faced floor to dome in dark marble, porphyry, and inlaid stone. Begun in 1604 and worked for generations.






The dome stood bare for two centuries. The frescoes that close it, scenes from Genesis and the Passion, were painted by Pietro Benvenuti in the early 1800s.




The Medici craft of cutting colored stone into images. Sixteen towns of the grand duchy are set into the walls as inlaid coats of arms, with flowers and fruit along the base.




The grand-ducal reliquary collection, displayed in the lower chapel.

The room Michelangelo designed as well as filled. Grey pietra serena drawn against white walls, rising to a coffered dome he modeled on the Pantheon.



Facing each other across the sacristy, the tombs of two Medici dukes. Below each, a pair of Michelangelo's reclining allegories: Dawn and Dusk, Night and Day.



On the entrance wall, Michelangelo's unfinished Madonna and Child, set between the Medici patron saints Cosmas and Damian.
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