Gaziantep, historically Aintab and still informally called Antep, is a major city in south-central Turkey. It is the capital of the Gaziantep Province, in the westernmost part of Turkey's Southeastern Anatolia Region and partially in the Mediterranean Region. It is located approximately 185 km (115 mi) east of Adana and 97 km (60 mi) north of Aleppo, Syria and situated on the Sajur River. The city is thought to be located on the site of ancient Antiochia ad Taurum and is near ancient Zeugma.