Developer Keith Jacobson, previously anointed a Curbed hero, already showed his personal real estate chops a few years back when he bought two units at Richard Meier's 173 Perry Street. He then combined them, renovated them, and resold them at a hefty markup. He tapped the same designer, Francis D'Haene of D'Apostrophe Design, to create "the ultimate rooftop" out of "nothing" for his latest apartment, a location-unknown penthouse with views of the High Line that is profiled in the latest issue of New York Design Hunting (available now). On the 2,000-square-foot roof: a heated lap pool, a full kitchen (with two refrigerators, a dishwasher, and a bar) and bathroom with open-air shower, plus a modern pergola, which shelters a dining table that seats 10. The pool had to be elevated in order to make it deep enough for swimming, so D'Haene built seating along the side, and landscape designer Miguel Pons filled planters with "tall grasses, succulents, and birch trees." Looks like another W for Jacobson.