Tarragona
The aqueduct of Segovia.
The Roman Aqueduct
The Roman Aqueduct
In Segovia, Spain (surprise!). If you want to have more information on the roman aqueduct museum, try visiting this website.. http://the-romanaqueductmuseum.blogspot.com/
The Segovia Aqueduct in Segovia, Spain is the best preserved Roman aqueduct still in existence. Its importance is shown by its appearance on the Segovia coat of arms.
the auqaducts
The Aqueduct of Segovia in Plaza del Azoguejo is the most famous Roman Structure standing in the City. Its absolutely amazing to see first hand...
The longest Roman aqueduct was Constantinople.
An Aqueduct is the answer. And to embellish this a bit more, I believe there is an aqueduct in Rome that still functions. Perhaps it has been closed down, but years ago when I was a student studying ancient Rome, the aqueduct was working.
If you meant Segovia, Spain, the most famous Roman ruin in the city is the large aqueduct which is nearly 28.5 meters tall at its highest. If you meant the lesser-known archaeological site of Segobriga in western Cuenca Province, there is a small complex of Roman ruins, featuring an octagonal tower, an amphitheatre, a temple, a forum, some roman baths, and an acropolis.
If you are referring to making a model Roman aqueduct, you can find websites which tell you.