Just outside Feres we can see from the street the Byzantine aqueduct. It is built on the ancient river Samias and it was a grandiose project for the water transfer to the settlement around the monastery of Kosmosoteira (World’s Saviour). It was built around 1200 AC by Isaac Komnenos. It is made of flint and its two arches have a height of 5 m, an opening of 7 m and a width of over a meter. I you pass by that point, after the night has fallen, you will see it illuminated and majestic.