There's a hidden mansion for sale in San Francisco with a retractable glass roof, an indoor swimming pool, and a decoy house in front - take a look inside

The neoclassical behemoth could be all yours.

The listing price on 47 Chenery has dropped from $12.5 million to $11 million since September. Quirky estates like this one typically spend more time on the market.

Source: San Francisco Chronicle

You can't put a price on the city views.

In 2009, Pritikin estimated he spends "a few hundred thousand" a year on landscaping and repairs alone. Those rooftop solar panels might help lower his electricity bill.

Source: Noe Valley Voice

The glass roof over the pool is retractable.

In the penthouse, stained glass windows salvaged from the former Little Sisters of the Poor Church reflect and sparkle off a 12-foot-by-20-foot indoor swimming pool.

Source: Socketsite

Pritikin admits only close friends and the occasional busload of seniors, who pay for lunch and a tour, to his in-home museum. He estimated the value of his collection at $50 million.

Source: San Francisco Chronicle

He's got a needlepoint tapestry of George Washington surrounded by $1 bills; a wall-sized replica of Rembrandt's "The Night Watch"; and a $35,000 chair no one is allowed to sit in.

Source: San Francisco Chronicle

Pritikin is an avid art collector, and his home doubles as a private museum of oddities. The clock (right) that once hung above F.A.O. Schwarz in San Francisco resides in the foyer.

Past the gates, the estate includes a five-bedroom, five-bathroom main residence, a garden cottage, and statue-laden grounds. The neoclassical facade lends a French country vibe.

Pritikin, a former ad man who claims to have named Google (but was never credited), accesses the compound through the three-unit dwelling on Chenery Street.

Source: Gizmodo

But there's more than meets the eye.

People walking by 47 Chenery Street might not think much of its curb appeal.