Ponte Santa Trìnita is the oldest elliptic arch bridge in the world. These arches mimic those found in Micheangelo’s Medici Chapels, which is why some art historians believe that Michelangelo aided architect Bartolomeo Ammannati in the design of this bridge. The Nazis blew it up on August 3, 1944, scattering pieces far and wide. Most were recovered from the Arno River, so what you see today is a reconstruction made from the original stones.