The commission to design the Discovery Center for the American Museum of Natural History outlined a program for 2,500 square feet of interactive educational space representing all major sciences, from anthropology to astrophysics. The project consisted of joining three different spaces into a coherent event: a circular room with 20-ft ceilings, the base of one of the 19th century turrets, a long narrow rectangle of a space, and a mezzanine space that slips between the main stair and adjacent Hall.