There is a country called Greece.
Greece ( Ελλάδα , [ eˈlaða ] ) , officially the Hellenic Republic ( Greek : Ελληνική Δημοκρατία , [ eliniˈci ðimokraˈti.a ] ) , historically also known as Hellas ( Ἑλλάς , [ heˈlas ] , modern pronunciation Ellás ) , is a country in southeastern Europe , with a population of approximately 11 million as of 2015 . Athens is the nation 's capital and largest city , followed by Thessaloniki . A founding member of the United Nations , Greece was the tenth member to join the European Communities ( precursor to the European Union ) and has been part of the Eurozone since 2001 . It is also a member of numerous other international institutions , including the Council of Europe , the North Atlantic Treaty Organization ( NATO ) , the Organisation for Economic Co-operation and Development ( OECD ) , the World Trade Organization ( WTO ) , the Organization for Security and Co-operation in Europe ( OSCE ) , and the Organisation internationale de la Francophonie ( OIF ) .