7. Frank Sinatra’s mountain retreat with helipad
Even the biggest of stars need time away from the spotlight and a place to escape, and Frank Sinatra was no exception. Hitting the market in April was the Mountain Center, Calif., retreat of Ol’ Blue Eyes himself.
Looking to stay cool in the summertime, Sinatra apparently chose a granite mountain plateau above Palm Springs, Calif., as the ideal locale for his hideout, complete with its own helipad, which was completed in 1967. Besides acting as his personal sanctuary, the chalet was said to have been used by Sinatra to wine and dine the Rat Pack, various dignitaries and a host of social elite.