Çeşme (ˈtʃeʃme) is a coastal town and the administrative centre of the district of the same name in Turkey's westernmost end, on a promontory on the tip of the peninsula that also carries the same name and that extends inland to form a whole with the wider Urla-Karaburun-Çeşme Peninsula. It is a popular holiday resort and the district center, where two thirds of the district population is concentrated. Çeşme is located 85 km west of İzmir, the largest metropolitan center in Turkey's Aegean Region. There is a six-lane highway connecting the two cities (Otoyol 32). Çeşme district has two neighboring districts, Karaburun to the north and Urla to the east, both of which are also part of İzmir Province. The name "Çeşme" means "fountain" and possibly draws reference from the many Ottoman fountains that are scattered across the city. Turkish sources always cited the town and the region as Çeşme (or Cheshme) which is originally a Persian word since the first settlement 2 km south of the present-day center (Çeşmeköy) founded by Tzachas and pursued for some time by his brother Yalvaç before an interlude until the 14th century. The name Çeşme means "spring, fountain" in Persian (چشمه) and possibly draws reference from the many Ottoman fountains scattered across the city. Erythrai The urban center and the port of the region in antiquity was at Erythrae (present-day Ildırı), in another bay to the north-east of Çeşme. Most probably, the ancient Greek polis of Boutheia (Βούθεια or Βουθία in ancient Greek) was situated in Çeşme. In the 5th century BC, Boutheia was a dependency of Erythrae and paid tribute to Athens as a member of the Delian League. The town of Çeşme itself experienced its golden age in the Middle Ages, when a modus vivendi established in the 14th century between the Republic of Genoa, which held Chios (Scio), and the Beylik of Aydinids, which controlled the Anatolian mainland, was pursued under the Ottomans, and export and import products between western Europe and Asia were funneled via Çeşme and the ports of the island, only hours away and tributary to Ottomans but still autonomous after 1470.