Hef's Playboy Mansion has a secret floor
This photo provided by Hilton & Hyland, exclusive affiliate of Christie’s International Real Estate, shows The Playboy Mansion in Los Angeles. (Hilton & Hyland/Courtesy of Christie’s International Real Estate via AP)
To get to the Playboy Mansion in the exclusive Los Angeles suburb of Holmby Hills you pass through a large metal gate, a layer of security and then drive up a winding road lined with manicured trees and a cheeky sign warning visitors: "Playmates at Play".
Eventually the Gothic-Tudor style mansion appears.
There's a bubbling fountain and more security personnel await to guide you into Playboy founder Hugh Hefner's home and site of debaucherous parties since he bought it in 1971, for a then-record $US1.1 million.
Greeting visitors at the front door are two stunning women dressed in - no surprise - black bunny ears, fluffy white tails and not much else.
It is a little after 9pm and in the expansive, landscaped backyard a party of beautiful people begins to roar.
There's open bars (I recommend The Centerfold cocktail - CIROC vodka, Pomegranate juice, Elderflower Liqueur and a splash of champagne) and guests are free to roam.
There's a zoo and, of course, the infamous grotto - a swimming pool in a large, dark cave that, let's just say, would have plenty of stories to tell.
Hefner opened his home to a select group on Tuesday night for a party to launch the new Amazon 10 episode TV documentary series about his life, American Playboy: The Hugh Hefner Story
Hefner's life story, and the way he used a naked Marilyn Monroe photo to launch his Playboy magazine, multi-media empire and brand, is told with a blend of old video interviews with Hefner and others close to him, as well as actors re-creating pivotal moments in his life.
New Zealand actor Matt Whelan portrays Hefner.
This image released by Amazon Prime shows Matt Whelan as a young Hugh Hefner in American Playboy: The Hugh Hefner Story, (Matt Klitschert/Amazon Prime via AP)
Of the many secrets the Playboy Mansion holds, the series' producer and noted documentarian, Stephen David, was stunned to discover one on his first tour of the home in October, 2015.
"First of all you are going to the Playboy Mansion which is impressive," David told AAP.
"I almost thought it was the dirty Downton Abbey when I walked in.
"I walked upstairs and went, 'Oh my God'.
"On the top floor of the mansion he basically has a presidential library with thousands of hours of video, thousands of photographs and he has been making scrapbooks about his own life since he was a teenager."
It was a documentarian's dream.
Hefner has been meticulously documenting his own life since his high school years with scrapbooks filled with photos, letters he sent and received and other documents.
He has a staff of librarians to maintain the massive archive.
"He holds the Guinness Book of World Records record for scrapbooks," David said.
"He has over 2900 scrapbooks and they are a foot thick each.
"What's interesting is every Saturday Hugh Hefner still goes in there and is still making his scrapbooks.
"I could see it laid out where he sits and there was a scrapbook in process."
David's team of researchers worked with Hefner's team to dig through the mountains of material for the documentary series.
Hefner, who turns 91 on Sunday, (April 9) was an open book.
"He told us everything, including bad things that we would never have known," David said.
He laughed when asked to reveal some of the less savory things about Hefner.
"You'll see it in the show," he said.
Hefner sold the mansion for $US100 million in August to his neighbour, 33-year-old Daren Metropoulos, the son of beer brewing billionaire Dean Metropoulos.
Hefner managed to strike a unique deal with the property sale - the most expensive price ever paid for a home in Los Angeles County.
Hefner will continue to live at the mansion until he dies.
American Playboy: The Hugh Hefner Story premieres in Australia on Amazon Video on April 7.
In this Nov. 4, 2010, file photo, Playboy magazine founder Hugh Hefner poses for photos at the Playboy Mansion in Los Angeles.(AP Photo/Jae C. Hong, File)
© AAP 2017