How did I miss this thread? Do you want a realistic building that conforms to structural stress patterns or just a mystical, "magical" building? Metareason Academy's School of Development in the University of Natural Sciences has an area of specialization in the Department of Mechanics that deals with structural mechanics, which deals with architecture and civil engineering. Then there's also the Department of Physical Control within the School of Magic, which was formed to teach aspiring mages control over the physical elements but can also be put to work to exert physics-defying physical control over buildings.

Wait, does magic even exist?