Si-o-se-pol

Si-o-se-pol, the bridge of thirty-three arches, was built around 1600 under Shah Abbas I to carry the Chahar Bagh avenue over the Zayanderud, and it is close to three hundred metres long, in two levels: a roadway on top and an arcaded walkway beneath running the full length, with alcoves along it. That lower arcade is what makes it a social place rather than a crossing, and Isfahanis use it constantly, sitting in the alcoves in the evening, and the vaults have acoustics that people sing into, which happens most evenings without arrangement. The river beneath it has run dry for long periods in recent years because of upstream abstraction and drought, so the bridge frequently stands over sand rather than water.

What you actually see

• Thirty-three arches - close to three hundred metres of Safavid bridge.
• The lower arcade - a vaulted walkway with alcoves along its length.
• Singing in the vaults - the acoustics people use most evenings.
• Evening lighting - the arches lit and reflected when there is water.

When to go

March to May and September to November. Evenings, which is when Isfahanis use it and when the singing happens. One to two hours. Water in the river is seasonal and unpredictable.

Honest expectations

The river is dry for much of the year in recent times, which removes half the effect and disappoints many visitors. The bridge is very busy on warm evenings. There is no interpretation. Nowruz and holidays fill it completely.

Nearby

Khaju Bridge is downstream; Naqsh-e Jahan lies north.