1520-27, 1530-34 Where is the New Sacristy located? The museum is part of the Basilica of San Lorenzo, an imposing early 15th-century church designed by Filippo Brunelleschi and the second largest church in Florence; the construction was financed by the House of Medici, to make the basilica their main, monumental, place of burial. Built in the 1250s by Henry III during his reconstruction of St Edward the Confessor's Abbey, the Sacristy was where the monks kept vestments, altar linens, and other sacred items used in the mass.Once an integral part of the Abbey, it is the only part of Henry’s church to have been lost. Sicily