Playboy had plans to build secret tunnels to nearby celebrity homes

Earlier this week Playboy published vintage photos of an excavation project along with a blueprint showing a series of tunnels connecting the infamous residence to various celebrity homes in the surrounding area.

According to the article, when asked about the photos of the construction site, the new Playboy Mansion general manager said "that's probably when they built the tunnels in the '70s." 

Screen grab

A closer look at the blueprint shows there were plans to dig tunnels to the the homes of "Mr J. Nicholson," "Mr W. Beatty," "Mr K. Douglas," and "Mr J. Caan."

Screen grab

"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," Playboy reported.

According to the article, the partial tunnels were closed in 1989 when Hugh Hefner married then-Playmate Kimberley Conrad.

Playboy reached out to the publicity representatives for Nicholson, Caan, Douglas, and Beatty, and has yet to receive a comment.

Here's a closer look at the blueprints:

Screen grab/Amanda Macias/Business Insider

Screen grab/Amanda Macias/Business Insider

And here's a recent look at the Playboy Mansion:

REUTERS/Kevork Djansezian