This Hotel des Artistes apartment, now on the market, comes with an incredible interior decor story. Bloomberg notes that it belongs to the French-born entrepreneur/photographer/art collector/playboy Jean Pigozzi, who purchased it in 1986. Soon after, he enlisted Ettore Sottsass, designer and founder of the Memphis Group, to redesign it. Sottass, at the time, was at the height of his fame, and ended up designing every nook and cranny. (He passed away in 2007, and the Metropolitan Museum of Art will host a retrospective of his work this summer.) As Pigozzi told Bloomberg, “He designed 100 percent of everything… Every table, every sofa, every book shelf, every sink, every doorknob.” He even helped Pigozzi expand the design into the adjacent duplex that he purchased a few years later. Now, the fabulous penthouse is on the market for $19 million.