Michael Graves' Portland Public Service Building broke new design ground when it was rolled out in 1982. It rebelled against years of poorly executed Miesian Minimalism by attempting to achieve a new humanist approach to architecture. It was the poster-child of Post Modern Architecture.
My, how time flies. The building and its designer were so clearly revolutionary that it achieved individual listing in the National Register of Historic Places only 29 years after it's completion (50 years is the norm). Now is is embroiled in another revolution, an effort to update it in the name of historic preservation, but using an approach and techniques that bear little or no resemblance to modern preservation practice. The building owners, the City of Portland, and their local design team are gung ho for the new approach. Everyone else, especially representatives of the best known historic preservation organizations, er, not so much. The latest salvo in this battle comes from DOCOMOMO. You can read about it at this link