Since the opening of the United States Holocaust Memorial Museum (USHMM) in 1994, considerable attention has been given to the physical design of the building. The Museum's web site offers several resources for exploring the origins of the building's design, as well as how visitors have come to interact with the constructed spaces within and outside of the structure.
Early design sketches by James Ingo Freed above right and below. United States Holocaust Memorial Museum
Art and Architecture of the U.S. Holocaust Memorial Museum