WIEDEMANN ARCHITECTS, established in 1984, and practicing as Muse-Wiedemann Architects from 1985-1994, is a full-service architectural firm with experience in all scales of design projects, from residential additions to large institutional and commercial projects. In addition to all normal architectural services, the firm offers services in feasibility studies, programming, site planning, master planning, urban design, and interiors. Wiedemann Architects brings a breadth of experience and a standard of excellence in design as demonstrated by the firm's numerous architectural awards.

Wiedemann Architects is perhaps best known for the design of sympathetic additions to older structures, for "additions so seamless they look as if they have always been there".

Gregory Wiedemann, AIA, Principal of Wiedemann Architects, received a Bachelor of Arts, magna cum laude, in Mathematics and Urban Planning from Tufts University, a Bachelor of Science in Civil Engineering, magna cum laude, from Tufts University College of Engineering, and a Master of Architecture from Harvard University. He was the recipient of the AIA Medal, an award given to the top-ranked architecture student at Harvard, a Frederick Sheldon Traveling Fellowship, and an Architectural Award from the National Society of Arts & Letters. He was Graham Foundation Scholar at Harvard in 1976 and is a member of Tau Beta Pi, the national honorary engineering fraternity.

Gregory previously practiced as a partner of Muse-Wiedemann Architects, a firm that quickly became recognized as one of the premier design firms in the Washington area. Prior to establishing his own firm in 1984, Gregory practiced in the office of Frank Schlesinger Architects in Washington, D.C., where he was a member of the project design team for National Place, Holy Name Friary, and the US Embassy Marine Guard Quarters in Haiti.

He has been a member of the design and technology faculties of the School of Architecture at the University of Maryland, and a member of the faculty of Johns Hopkins University, where he taught a design course in the real estate development program. His academic work has been recognized by numerous regional and national awards, including an award for an ACSA International Design Competition and a national AIA Education Honor Award for excellence in design education at the University of Maryland.