"It's not the buildings, but the location that makes this a once-in-a-generation opportunity," Peter Stevens, SVP of the Philadelphia office of CB Richard Ellis, tells GlobeSt.com. "The lack of similar comparable tracts of land should make the campus extremely attractive to a variety of potential buyers. There are few, if any comparable parcels available in Eastern Pennsylvania."

While CBRE is marketing the property internationally, Stevens says, "within a 10-mile radius there are so many potential buyers well acquainted with the lower Main Line" that he believes an area university or corporation will become the ultimate buyer. He declines to speculate on what the property might fetch.

American moved to the campus in the early 1960s, but now offers the overwhelming majority of its continuing education programs over the Internet. It hopes to structure a lease arrangement with a potential buyer that would allow it to consolidate its operations into the largest, 5,700-sf building on the campus. Stevens says most of the buildings "are of good institutional quality and several are exceptional. In addition, there may be room for expansion." He declined to quantify the amount that could be added.