15 USW is a bold redevelopment of the 19th century headquarters of Tiffany & Co., recast as a 21st century jewel box. There is approximately 11,000 sq. ft. of ground-floor retail space plus 36 condominium units many with floor-to-ceiling windows that incorporate the original structure’s magnificent 15-ft. cast-iron arches. The building was designed as a high level condominium with ceilings soar, kitchen and bath fixtures are bespoke, foyers are made of limestone and oak, and spectacular units feature gas fireplaces and over-sized terraces overlooking the park. Building amenities include a spa with 50-ft. lap pool, fitness center and yoga studio. All units sold.