@Engineer80 is wrong about accounting. It does not require specific undergraduate training. It does require that you pass accounting certification exams, and undergraduate training probably helps enormously in doing that soon after graduation. But I was offered a job with what was then a Big 8 accounting firm with nothing more than a one-semester introduction to accounting under my belt. Their view, at least then, was “We know how to teach accounting. What we don’t know how to teach is analytic ability, writing, and intellectual confidence.”
I don’t think anyone can become an architect based on undergraduate training, and I don’t think there are many undergraduate prerequisites to architecture school. As I understand it, though, there’s a fairly long professional apprenticeship required before someone can get certified as an architect.
St. John’s does offer programs that subsidize students taking courses they need to meet medical school application requirements (and other career development requirements) during college summers.