Ask at the hotel desk and, if they aren't totally swamped, they'll have a security guard give you a free tour of the place and tell you much of the history. They'll take you through Frank's and Marilyn's bungalows, if they aren't occupied. They'll take you through a tiny section of the tunnels that run under the place. They'll show you the showroom, and let you play Frank's piano. It's a fun way to spend 45 minutes, or so!