🇮🇷 Iran · Hydraulic works
Band-e Kaisar (Valerian Bridge-Dam, Shushtar — Pol-e Kaisar)
Sassanid Early (Shapur I, 241–270 CE) built by Roman captives · Sassanid Persian with Roman engineering corps (Legio)
500-m Roman-Sassanid arch bridge/dam (260 CE) raising Karun for Shushtar's 10-km Gargar canal — easternmost Roman dam.