To make the most of the limited square footage of a New York City apartment, architect Michael K. Chen created a now-you-see-it, now-you-don’t “party wall.” By day all that is visible in the entry of the home is a wall of sleekly lacquered cabinets and drawers. But after dark, in the words of the architect, “the panels open to reveal a full bar with integral refrigeration and tap, and storage in a louche walnut burl with integral LED lighting. A display compartment has another dual personality, flipping from cool and white, to richly burled wood. A separate compartment reveals an integral custom humidor in milled cedar. Finally, integrated into the piece is a five-foot-long pull-out dining element that slides out, cantilevering from the storage volume on custom steel hardware, creating a micro dining room.”