Ancient Kyzikos/Cyzicus

 place with historical importance, archaeological site, interesting place, draw only border, ancient ruins

Cyzicus (/ˈsɪzɪkəs/; Ancient Greek: Κύζικος, Kyzikos; Ottoman Turkish: آیدینجق‎, Aydıncıḳ) was an ancient town of Mysia in Anatolia in the current Balıkesir Province of Turkey. It was located on the shoreward side of the present Kapıdağ Peninsula (the classical Arctonnesus), a tombolo which is said to have originally been an island in the Sea of Marmara only to be connected to the mainland in historic times either by artificial means or an earthquake.

The site of Cyzicus, located on the Erdek and Bandırma roads, is protected by Turkey's Ministry of Culture. Most of the ancient city has disappeared, and much of the site is agricultural land. A few ancient landmarks are the remnants of the amphitheater and the temple of Hadrian, both outside the fortified circuit, and a section of the northwestern wall with a gate, as well as the hexagonal tower at the western corner of the fortifications. The akropolis of Cyzicus was located in the northernmost section of the fortified circuit, near the amphitheater. The original Greek agora of Cyzicus was located just inside the southern wall near its southwestern corner. An ancient canal protected the Cyzicus peninsula from attack from the south; this is crossed by modern roads and is obscured by the extensive Belkis Swamplands.

en.wikipedia.org/wiki/Cyzicus