Si-o-se Pol (The Bridge of 33 Arches) is a famous bridge in the Iranian city of Isfahan. It is highly ranked as being one of the most famous examples of Safavid bridge design. Commissioned in 1602 by Shah Abbas I, the bridge is build of bricks and stones. It is 295 meters long and 13.75 meters wide. It is said that the bridge originally comprised 40 arches however this number gradually reduced to 33.