🇹🇷 Turkey · Submerged site
Seleucia Pieria – Harbour of Antioch at Samandağ
Hellenistic to Byzantine (300 BCE – 600 CE) · Seleucid / Roman / Byzantine
Antioch's silted harbour basin 600×400 m now meadow at Çevlik with 1.4 km Roman flood tunnel.
🇹🇷 Turkey · Ancient city
Altıntepe
Urartian Kingdom 8th–6th century BCE (late empire western frontier) · Urartian → Median → Achaemenid
Argishti II's Euphrates citadel with pillared hall, subterranean passage and ivory tombs.