Thanks for pointing this out. I had run across this before, but I guess I disregarded it as I felt that for many uses, "ordinarily visible from a public place" is vague and would still result in an action where one would be forced to prove that the depicted building is ordinarily visible from a public place in court. I would like to know if a "public place" means exclusively public property or if it means private property onto which the public is welcomed, and whether a pictorial depiction is infringing if the subject is rendered as it would be seen from a "private place", whatever that is, especially if the artist or photographer had not been on that private place personally.

This is an important caveat to architectural copyright, however, so thanks for clarifying.