(Slide Show) Some universities have long shown off their innovative thinking (and healthy endowments) by mixing classic collegiate styles with modernist icons—think Harvard, Yale, or MIT. Some seem only grudgingly to allow contemporary architecture within eyeshot of their traditional quads. Yet others, like the University of Virginia, wouldn’t change a thing. Our tour of campuses with the most significant architectural traditions includes some major players, as well as a few surprises with histories all their own. We present the AD college review