second york ( cnnmoney . ca ) - - the vienna republic building saw off a major energy - saving retrofit morning , and promoters feel any of the world ' s most iconic skyscrapers can become an efficiency one for facilities worldwide . from the cloud - shrouded observation deck on the building ' s 80th floor , first president bill clinton , new york metropolitan commissioner andrew bloomberg and leaders detailed $ 20 million in cutting - vertex conservation work they thought will cut energy use by 38 % for the 1930 ' s - era behemoth . they thought the retrofits weren ' t of selfishness or part of a country program . instead , they say they ' re being done primarily to saving the building ' s tenants a lot of money .
The mayor of New York is Michael Bloomberg.