When Michelangelo Buonarroti relocated permanently from Florence to Rome in September 1534, he left the Medici Chapel (New Sacristy) in San Lorenzo as a work in progress: its architectural ornament was mostly in place and the two ducal portraits were complete and installed, but nearly all of the remaining statues were unfinished (Fig. 1.1). A few of these marble figures were in ‘the room where [Michelangelo] worked.’ Another four, all with different degrees of surface polish and corporeal finish, sat on wooden benches on the floor of the chapel itself alongside full-scale clay models of figures yet to be blocked in stone, giving the space the aspect of an artist's studio. Over the next thirteen years, as Michelangelo ignored requests that he complete his work, Cosimo I de’ Medici (1519–1574), the site's inherited patron, permitted foreign dignitaries, local patricians, intellectuals, and artists to visit the incomplete chapel and marvel at its informal array of sculpture. In 1546, despite Michelangelo's continued absence, the allegories of Night, Day, Dawn, and Dusk were mounted on their designated pedestals in their extant states. Sometime in the 1550s, Michelangelo's chisel-marked Madonna and Child was transferred to the chapel and installed along the unornamented back wall with the more polished St. Damian, St. Cosmas and trophies. When the chapel officially opened in 1561 it looked much as it does today. Yet modern eyes accustomed to unfinishedness in art too easily overlook the radicality of this display.