Leonardo da Vinci applies for a job
Michelangelo's projects for the fortification of Florence
If you take a nice hike from the center of Florence across the Arno and up the hill to San Miniato (an active abbey), you will walk past and even clamber over some of the defensive walls designed by Michelangelo. The monks at San Miniato are friendly fellows, and they can sure chant the vespers.