The name of this bridge might seem strange to you. It is derived from the fist fights that used to take place on this one and also the neighborhood bridges as a celebrated Venetian tradition. Today though, you don't need to worry, crossing the bridge is completely safe and it also looks very good on pictures.
Wikipedia https://en.wikipedia.org/wiki/Ponte_dei_Pugni
More information http://www.atlasobscura.com/places/ponte-dei-pugni-bridge-of-fists
Address Ponte dei Pugni, 30123 Venice, Italy
Coordinates 45°25'59.513" N 12°19'27.689" E