Located in the original 19th-century headquarters of Tiffany & Co., a sophisticated duplex showcasing the talents of designer Vicente Wolf successfully combines its heritage with modern luxury living. Framed by the original cast-iron arches, soaring floor-to-ceiling windows offering partial views of Union Square Park welcome abundant light into the open layout that flows effortlessly across warm hardwood floors to the eat-in kitchen featuring a large marble island, lime-rubbed oak cabinetry with bronze accents, and the finest modern appliances. A Marretti steel-and-glass staircase punctuates the space, rising to the duplex’s bedroom corridor where an expansive master suite with walk-in closet features a generous en-suite bathroom adorned with Pietra Bedonia stone and shagreen fixtures. A second en-suite bedroom attends. Set behind a facade of black zinc and glass, this Union Square icon offers residents five-star amenities including a 24-hour doorman, onsite concierge, spa with 50-foot lap pool, fitness center, and Pilates studio.