🏛️ Seleukeia Tracheia-Diokaisareia Olba
Ruined Hellenistic-Roman port city on the Cilician coast
📌 Fast Facts
- Located in Mersin Province, southern Türkiye, on the Mediterranean coast
- Founded as Seleukeia Tracheia in the 3rd century BCE; later renamed Diokaisareia during the Roman period
- Served as a major port and naval base throughout Hellenistic and Roman antiquity
- Partially excavated; ruins accessible but undeveloped as a tourist site
Seleukeia Tracheia-Diokaisareia Olba is an ancient harbor settlement on the Cilician coast, encompassing remains from both the Hellenistic Seleucid period and the Roman Imperial era. The site was originally established as a fortress port in the 3rd century BCE to control maritime trade and military movements in eastern Cilicia. Its dual nomenclature reflects successive administrative reorganization under Hellenistic and Roman rulers ...