A sculptor, painter, architect, and poet, Florentine native son Michelangelo was a consummate genius, and some of his finest creations remain in his hometown. The Biblioteca Medicea Laurenziana is perhaps his most fanciful work of architecture. A key to understanding Michelangelo's genius can be found in the magnificent Cappelle Medicee, where both his sculptural and architectural prowess can be clearly seen. Planned frescoes were never completed, sadly, for they would have shown in one space the artistic triple threat that he certainly was. The towering yet graceful David, perhaps his most famous work, resides in the Galleria dell'Accademia.
After visiting San Lorenzo, resist the temptation to explore the market that surrounds the church: the market is open until 7 pm, while the churches and museums you may want to visit are not. Come back to the market later, after other sites have closed. Note that the Museo di San Marco closes at 1:50 on weekdays.