The aqueduct was built during the second century when Greece was under Roman rule. Its purpose was to supply water to the nearby villa of Herodes Attica, one of the richest and most important Greeks at the time. The villa is fenced off for excavationbut it is possible to see many of the structures through the fence. The villa covers a huge area and was in effect a small town. The central complex was over 20,000 square meters. An artificial river was built so that the villa could only be reached with Herod's portable bridges.
Near the aqueduct is the 12th century Loukou Monastery (also known as the Monastery of the Transfiguration of Christ the Saviour). This is now occupied by nuns who maintain the monastery and also engage in embroidery, carpet weaving and agriculture. In the mornings it is possible to visit the monastery and one of the nuns will provide a tour and explain the history - afterwards it's a good idea to make a small purchase in the shop.
The aqueduct is still in use and supports water pipes. It is possible to walk across the aqueduct but this is not advised. IT IS NOT NECESSARY TO WALK ACROSS THE AQUEDUCT TO FIND THE CACHE.