English: Shāh Abbās Arch (Persian: طاق شاه عباس) is the thinnest arch dam in the world and one of the oldest arch dams in Asia. It was constructed in Tabas county, South Khorasan Province, Iran some 700 years ago. It stands 60 meters tall, and has a 1 meter width crest.
Some historians believe the dam was built by Shāh Abbās I, whereas others believe that Shāh Abbās I repaired it.
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