The Aghia Marina station lies between the ancient demes of Ermos (Haidari) and Lakiades (Eleonas). An hydraulic system of late antiquity came to light on the site, consisting of cisterns, access shafts and pipes. It would probably have been connected to a nearby workshop or settlement. The pipe on display was constructed of two rows of ?U?-shaped ceramic tiles, placed upside down atop each other. It was dismantled and rebuilt at its current position.