Read that in the news today. Might be an interesting place to visit some day as they are going to put in a museum too. It's located in Salem, OR. The movie was filmed there. The even hired a bunch of the patients as "extras". However, it was sad to learn of the "room of the lost souls"; a room that contained the unclaimed cremains of patients who had died there between the late 1880's and 1970's.
Anyway, I loved that move. I loved the book, and the movie was portrayed good with Jack Nicholson.