By Debbie Emery - Breaking Celebrity News Reporter

The white-walled rooms of this New York City penthouse once rang out with the soothing voice of Ol' Blue Eyes, and entertained the likes of President John F. Kennedy, Marilyn Monroe and Andy Warhol.

Now the 3,000-square-foot duplex on East 72nd Street that was home to Frank Sinatra is about to hit the real estate market, and Breaking Celebrity News has photos inside the recently modernized apartment that Warhol called “a glittering grotto in the sky.’’

“The apartment has been modernized, but it is still set up for someone with that Rat Pack mentality,’’ real estate broker Jason Haber told the New York Post. “It is really for someone who wants to entertain, to have people over, to have dinner parties.”

While it has undergone extensive renovations, whoever buys the $7.7 million condo when it goes on the market next week with be moving into a slice of Rat Pack history that Sinatra helped design during the 1961 construction.