Situated near the Medici Palace, this was the family's traditional parish church. In the 1420's Giovanni di Bicci and Cosimo ordered extensive renovations and Brunelleschi transformed it into the first church since Roman times to use the classical style. The church houses the tombs of Giovanni di Bicci, Cosimo il Vecchio, Piero il Gottoso, Cosimo I, and the Grand Dukes of Tuscany. The most famous tombs were built for Lorenzo the Magnificent and his murdered brother, Giuliano. Lorenzo's protégé Michelangelo designed them on the orders of Pope Leo X. Attached to the church is the Laurentian Library, home to a vast collection of Ancient and Renaissance texts accumulated by the Medici family.