Amazing story over at Playboy.com:

When you work at Playboy, you hear a lot of stories. Some of them are true: The Playboy Mansion is, in fact, the only private residence in LA with a fireworks license and one of the few with a zookeeping permit. Some of them — such as whether there’s a secret room in the house that lets you see into the Grotto pool — we can’t verify because we’ve never actually seen that room in The Mansion. But we’d never heard anything about a tunnel (…).

So, according this blueprint, tunnels were built to the homes of “Mr. J. Nicholson,” “Mr. W. Beatty,” “Mr. K. Douglas” and “Mr. J. Caan.” We’ll go ahead and assume they’re talking about Jack Nicholson, Warren Beatty, Kirk Douglas and James Caan – all of whom lived near the Playboy Mansion during the late 1970s and early 1980s. There are no dates on the architectural schematics, but the dates on the Polaroids were from 1977.

You can’t make this stuff up. Via Messy Nessy Chic.