Filippo Brunelleschi’s dome over the Cathedral of Santa Maria del Fiore. Sandro Botticelli’s The Birth of Venus, which hangs in the Uffizi. Michelangelo’s Madonna of the Stairs that is on exhibition at Casa Buonarroti. The incomparable Boboli Gardens dreamed up by Bernardo Buontalenti. Each one commissioned by a member of the Medici family.