Vienna is a place.
Vienna . Vienna is Austria 's primary city , with a population of about 1.8 million ( 2.6 million within the metropolitan area , nearly one third of Austria 's population ) , and its cultural , economic , and political centre . In a 2005 study of 127 world cities , the Economist Intelligence Unit ranked the city first ( in a tie with Vancouver , Canada and San Francisco , USA ) for the world 's most liveable cities .