The 1st century AD Roman Aqueduct of Segovia, in Spain, constructed from 20,400 granite blocks without mortar.
— 🏛 𝐒𝐭𝐞𝐯𝐞𝐧 🏛 (@nonregemesse) May 17, 2026
The bridge structure transported water 17 km from mountain springs to Segovia until 1973 pic.twitter.com/7V8R0tyOI1
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