Rentina Castle, Byzantine fortification in Volvi Municipality, Greece

The castle sits on a hilltop at the western side of the Rentina strait and overlooks the trade routes between two major cities. Stone structures spread across the site and reveal different construction phases from various periods.

The fortification rose in the early medieval centuries as a protective post for the trade route. Later, additional walls were added and the structure was rebuilt and expanded several times.

Local people and visitors recognize this site mainly through the archaeological discoveries that speak of intensive trade and commerce. The many coins and pottery pieces show how important this location was for the economy.

To visit the grounds, wear comfortable shoes and start from the area near Agia Marina Church. The path runs along a major road and takes about 20 minutes to reach the ruins.

Two small underground cisterns supplied the garrison: one at the base of a tower by the northwest corner of the wall, another inside the citadel. A large reservoir was later built on the acropolis plateau, and a half-buried covered corridor led from a tower base to a cistern with a double vestibule roofed by domes, fed by the nearby stream.