Weiss/Manfredi to Reimagine National Geographic’s D.C. Headquarters.  National Geographic’s Washington D.C. headquarters will be getting a facelift. New York-based Weiss/Manfredi has been selected to renovate and expand the society’s collection of buildings built over the past century. The firm has been tasked with creating a “dynamic new expression” for National Geographic to facilitate its museum, research activities, media, and international programs. Weiss/Manfredi was selected over Diller Scofidio+Renfro, Diamond Schmitt Architects, and Steven Holl Architects.