The San Lazaro Aqueduct in Merida, Spain, with a playground near.
Aqueduct in Caesarea, Israel.
The Pont du Gard, one of the oldest remaining aqueducts from the Roman period.
A rough drawing of a siphon, one of the most ingenious devices used by Romans to transport water.
An underground cistern servicing the Valens Aqueduct.
The Valens Aqueduct in modern day Istanbul. Traffic flows underneath.