Some locations on Google Maps are not strictly a single address and are instead denoted by a shaded area. (For example, any state or provincial park, or of specific interest to me, the Acadia University campus). Is there any way to obtain a set of longitude/latitude coordinates defining the boundary of such regions? (Again, I'm specifically interested in the aforementioned campus but I'm also interested in general solutions.)
I'm aware that this information may be more easily accessible in a data set other than Google Maps, but I'm not aware of what data set that might be, so I'll gladly accept answers that don't have anything to do with Google Maps but net approximately the same result.
(I'm sorry if this is the wrong place to be asking this question; while my first thought was to ask on Super User, it seems to have taken a turn toward tech support of late; despite being data-retrieval-oriented, this isn't a programming question, so Stack Overflow was out; and the GIS Stack Exchange seems more concerned with plotting existing data.)