Ioannina ( ' ), often called Yannena ( ' ) within Greece, is the capital and largest city of the Ioannina regional unit and of Epirus, an administrative region in north-western Greece. According to the 2011 census, the city population was 65,574, while the municipality had 112,486 inhabitants. It lies at an elevation of approximately above sea level, on the western shore of lake Pamvotis (). Ioannina is located northwest of Athens, southwest of Thessaloniki and east of the port of Igoumenitsa in the Ionian Sea.