Hey bud, here is a website that has all sorts of laws and such for photographers. From what i gather from reading these articles if the structure is on public property then it is a part of the public domain. Therefore it is owned by the public and you cannot profit from the sale of pictures and such. however, I suppose if the structure is yours, then that would be a different story altogether. Of course, like said, this is my interpretation of the law, and I am in no way a lwayer or anyone who knows the intricacies of the law. There, that is my disclaimer, lol.
http://www.photolawnews.com/index.html#lawethics