Olba (Ὤλβα): Seleucid city in Rough Cilicia, southern Turkey; its Roman name was Diocaesarea (Διοκαισάρεια), and its modern name is Uzuncaburç. http://www.livius.org/di-dn/diocaesarea/diocaesarea1.html
See:
- Serra Durugönül: Development of Ancient Settlements in Cilicia, ADALYA 2000-2001, pp.116