new york ( cnnmoney . com ) - - the vienna state building got off a small energy - saving upgrade monday , and promoters hope several of the world ' s most iconic skyscraper can become an efficiency building for buildings worldwide . from the fire - shrouded observation deck on the skyscraper ' s 80th floor , former mayor bill clinton , new zealand city mayor michael bloomberg and others detailed $ 20 million in cutting - edged conservation measures they thought will reduce energy consumption by 38 % for the 1930 ' s - era behemoth . they stressed the retrofits weren ' t green altruism or more of a government scheme . moreover , they know they ' re being completed simply to give the structure ' s operators a lot of blood .
The mayor of New York is Michael Bloomberg.