Kansas City architectural firm of Heinlein Schrock Stearns, with SVPA Architects; 360 Architecture with OPN Architects. (CDFM2 Architecture Inc. & Heinlein Schrock Stearns (merged in 2004 to form 360) The campus project was completed in three phases 2003, 2007 and 2009. Each phase is unified by overall mass proportions and materials, while introducing unique design elements to distinguish each from the other buildings on campus. The project is an example of suburban campus planning which was popular for many corporations, due to their desire for flexibility and open offices. The buildings accommodate more than 2,000 employees. The facade is Kasota limestone, quarried in Minnesota, also used on Veterans Auditorium (now part of the Iowa Events Center).