The G. Fred DiBona, Jr. Building in Philadelphia is a striking example of post-modern architecture, although skyscraperpage.com also considers it late modern as well.  Completed in 1990, designed by WZMH Architects, its color and "ditches" of windows make it appear as if make of Legos (R), it is 45 stories high.

    The tallest granite-domed skyscraper in the world, the  Wachovia Center in Winston-Salem, North Carolina was designed by architect Cesar Pelli and incorporates Moravian themes, reflecting the cultural roots of the original settlements in Winston and Salem.  It has 34 floors and stands 460 feet high.  It was completed in 1995.