Technology
The ancient Romans also had a complex system of aqueducts, which were used to transport water across long distances. The first Roman aqueduct was built in 312 BCE. The eleventh and final ancient Roman aqueduct was built in 226 CE. Put together, the Roman aqueducts extended over 450 kilometers, but less than seventy kilometers of this was above ground and supported by arches.
Aqueduct of Algeciras
The Aqueduct of Algeciras () is one of the most important buildings in Algeciras, Spain. Numerous textbooks, dictionaries and guidebooks cite this building as Arabic or Roman but it was built in the eighteenth century.