Eskişehir (pronounced [esˈkiʃehiɾ]; Turkish: eski "old", şehir "city")) (Greek: Δορύλαιον) is a city in northwestern Turkey and the capital of the Eskişehir Province. The population of the city is 685,135. The city is located on the banks of the Porsuk River, 792 m above sea level, where it overlooks the fertile Phrygian Valley. In the nearby hills one can find hot springs. The city is 233 km (145 mi) to the west of Ankara, 330 km (205 mi) to the southeast of Istanbul and 78 km (48 mi) to the northeast of Kütahya. Known as a university town, both Eskişehir Osmangazi University and Anadolu University (which has one of the largest student enrollments in the world) are based in Eskişehir.