This 2-bedroom, 2.5-bath oceanfront home in Bolinas, California, has a secret. Built in 1958, the home features multiple hidden doors. One treat stashed away from public view is the wine cellar, presumably for oenophiles who don’t like to share their best bottles with just anyone. But the $5.5 million listing also offers other unique features, such as a master bath set in a garden atrium, a hand-hewn sauna and a master closet with retractable copper bars. And that’s not to mention the surroundings: a 3-acre parcel of land overlooking the Pacific Ocean.