The 85-m- (267-ft-) tall bell-tower (it's a 414-stair climb to the top) is decorated on its lower sections by hexagonal bas-reliefs sculpted by Andrea Pisano and Luca della Robbia, based on Giotto's drawings.
The the lower portion of the tall bell-tower is embellished with sculptures based on Giotto's sketches.
One of the city's many blessings is that there remain so many quiet and beautiful corners that have changed little with time.