Patras is Greece's third-largest city and the regional capital of Western Greece, in the northern Peloponnese, 215 km (134 mi) west of Athens. The city is built at the foot of Mount Panachaikon, overlooking the Gulf of Patras.
The Latin Archbishopric of Patras was the see of Patras in the period in which its incumbents belonged to the Latin Church. This period began in 1205 with the installation in the see of a Catholic archbishop following the Fourth Crusade.