Which Medici chapel contains Michelangelo's sculptures 'Night' and 'Day'?

Michelangelo’s sculptures Night and Day are in Florence’s New Sacristy, also called the Sagrestia Nuova. The chapel forms part of the Medici Chapels at the Basilica of San Lorenzo and was designed as a mausoleum for members of the Medici family.

Michelangelo designed both the architecture and the tomb sculptures beginning in the 1520s. The figures of Night and Day recline on the sarcophagus of Giuliano de’ Medici, while Dawn and Dusk appear on the tomb of Lorenzo de’ Medici. Together, these personifications represent the passage of time and the transience of earthly life.

The New Sacristy deliberately balances Brunelleschi’s earlier Old Sacristy, which stands nearby at San Lorenzo. That resemblance explains a common mix-up: both spaces are associated with the Medici, but Michelangelo’s famous allegories belong to the newer chapel. Michelangelo left no surviving written explanation for the figures’ meanings; the labels Night, Day, Dawn, and Dusk were supplied by later commentators, including Benedetto Varchi in 1549.