AQUEDUCTS

Roman aqueducts were built in all parts of the Roman Empire, from Germany to Africa, and especially in the city of Rome itself, where they totaled over 260 miles. The aqueducts were important for supplying water to large cities across the empire, and they set a high standard of engineering that was not surpassed for more than a thousand years. No mortar was needed to build these structures as the stones fit together so precisely.