Madradag aqueduct was built to the acropolis in 197-159 BC by Eumenes II. The aqueduct was consisted by three parallel pipelines with length 50 km. The inner diameter of the terracotta pipes was 18 cm with a wall thickness 3.5 cm and the pipe were in parts of 50-60 cm. The three pipelines were parallel until they reached a header tank, consisted by two chambers of 3.62 x 1.21 m each. The water was flowing into the first chamber and then into the second by a pressure pipeline. The second chamber was united with an inverted siphon, with approximate pressure 190m, which was carrying water from the main tank to the acropolis.

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