Aqueducts
Here is a model of the aqueducts.
The Aqueducts of Rome were used to get water from the river to Rome. The water came through the mountains. They helped supply water easily. Arch was made out of cement and ruble. Then on top was the aqueduct. The height limit on the aqueducts was 21 meters tall. There were two tiers to the aqueducts. The aqueducts also cleaned the water. there was 40 million gallons of water a day.