The Romans are well known for their aqueducts, which brought water to their cities and settlements.
These aqueducts sometimes ran for very long distances. For instance, the aqueduct of Valens, which brought water to the city of Constantinople (modern-day Istanbul), was 250 miles (400 kilometers) long, according to a statement from Johannes Gutenberg University Mainz.
The aqueducts also lasted a long time; their remains are some of the most prominent Roman architectural finds visible today. All of this demonstrates the Romans' engineering prowess. So how did the Romans build such large and long-lasting aqueducts?
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