One of the most important surviving architectural monuments is the aqueduct that supplied water to the port city of Elyros, Syia. The source was north of ancient Elyros near St. Paul.
Remains of the aqueduct can be seen along the provincial road leading to Sougia.
Unfortunately, the first remains found near the village of Moni, at a distance of 3.2 km from Syia, were removed.
The part of the aqueduct known so far consists of a brick canal, which was built in the upper part with a stone wall 1.5 to 2.0 m high. The insides of the canal were covered with hydraulic mortar and the top with stones and mortar.
The total length of the aqueduct is estimated at around 8 km and its daily water supply capacity is estimated at 490 cubic meters, which today could supply a town of 2,500 inhabitants. The course of the aqueduct maintained a stable gradient and followed the terrain. In the areas where the aqueduct crossed streams, water bridges were built, the ruins of which could be identified at four locations. During the construction of the provincial road, the aqueduct was cut vertically and its continuation can be found on the east bank of the river. At this point the channel wall reaches a height of 5.0 m in height to maintain the slope.
No traces of the aqueduct's receiver or water distribution structures have been found to date. There are cisterns scattered throughout the archaeological site, which could supply water to private homes and public thermal baths.