330 north wabash (formerly ibm plaza also known as ibm building and now renamed ama plaza) is a skyscraper in downtown chicago, illinois, united states. it is at 330 n. wabash avenue. it was designed by famed architect ludwig mies van der rohe (who died in 1969 before construction began). the 52-story building is overlooking the chicago river. it stands 695 feet (211,8 meters).