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Photo: Corina Möller — CC BY-SA 4.0 — Wikimedia Commons
Zayanderud River, Isfahan
Si-o-se-pol is a historic bridge over the Zayanderud River in Isfahan, Isfahan Province, also known as the Allahverdi Khan Bridge. It stands at the south end of Chaharbagh Abbasi and links the two banks of the river with its row of arches. Its popular name, thirty-three bridges, comes from the number of those arches.
The bridge was built under Shah Abbas I of the Safavid dynasty, overseen by Allahverdi Khan, and its architect was Master Hossein Banna Isfahani. Different years are given for the start and the end of the work, but it belongs to the laying out of Chaharbagh in the same period. It was registered as a national monument, number 110, on 5 January 1932.
The bridge links Chaharbagh Abbasi with Upper Chaharbagh and carries people on foot across the river. In the Safavid era it was more than a crossing: the water-splashing festival and the Armenians of Isfahan's ceremony of the blessing of the water were also held here.
At the water-splashing festival of the Safavid era, people threw water and rosewater at each other on the thirteenth day of the month of Tir. European travel writers also described the festival being held beside the bridge.
🕘 Opening hours
Unknown
🎫 Entry
Unknown
⏱️ Time to spend
About 30 minutes (typical for this kind of place)
This page is a translation of our Persian guide to this place, where visitors also leave reviews. Last checked: 16 October 2026.