Mandrocles was an ancient Greek engineer from Samos who built a pontoon bridge over the Bosporus for King Darius I to conquer Thrace. Mandrocles dedicated a painting, depicting the bridging of the straits, to the goddess Hera in the Heraion of Samos, commemorating his achievement.
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Last revised Jul 10, 2026
Mandrocles
Mandrocles was an ancient Greek engineer from Samos who built a pontoon bridge over the Bosporus for King Darius I to conquer Thrace. Mandrocles dedicated a painting, depicting the bridging of the straits, to the goddess Hera in the Heraion of Samos, commemorating his achievement.