The Persian Caravanserai, a UNESCO World Heritage site in Iran, comprises 54 historic roadside inns spanning the country, recognized in 2023 for their role along ancient trade routes from the Achaemenid era (550-330 BCE) to the 19th century. These fortified structures, strategically spaced 30-40 kilometers apart, feature robust brick and stone architecture with courtyards, stables, and domed halls, offering shelter to travelers and merchants. Exemplifying Persian engineering and cultural exchange, sites like the 16th-century Zein-o-din showcase a resilient network that supported commerce and connectivity across Iran’s diverse landscapes for over two millennia.

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