SR Crown Hall, Illinois Institute of Technology, 1950-56. Ludwig Mies van der Rohe. The architecture building as IIT, designed for flexibility. The partition walls can be moved, which allows the space to be converted from studios to galleries to performance spaces. The thin roof is an amazing engineering feat.
Minerals and Metals Research Building, Illinois Institute of Technology, 1943 - (Ludwig Mies van der Rohe) - I'm not sure I would classify this as brutalist architecture - it's very Mies-ian and very modernist. If anything it harkens back to the early work in weimar. But how appropriate for a minerals and metals building. --M2