010 McLean Hospital

It's that famous hospital for wealthy Boston brahmins and literary types who have gone a little haywire in the head ("thoroughbred mental cases," as one of their number, Robert Lowell, once put it). But one of its former patients (fictional, in this case, but no less blue-blooded) who is not yet mentioned on the Wikipedia page (as of December 8, 2018) is Polly Perkins, from the great 1990 Whit Stillman film Metropolitan. Perkins is doubly fictional in this case, as she is made up by one of the characters (no, not made up, a "composite," he insists, "like they do in New York Magazine"), but in any case it is clearly stated that she -- addled debutante that she is -- did time in McLean.