The duplex in 15 Union Square West, a building once the headquarters of Tiffany & Co. (CORE) Though it is no longer the “palace of jewels,” the former headquarters for Tiffany & Co. at 15 Union Square West is still quite nice to look at, with its sleek glass-and-black-zinc exterior juxtaposed with the restored original cast-iron arches. “One of the features is the mix of older architecture with sleeker finishes,” Core broker Cassie D’Agata opined of the sixth-floor, 2,282-squ

The Kushner Company is developing six penthouses on the top floors of the famed PuckBuilding. The spaces will range from approximately 5,000 to 7,000 square feet with high ceilings,extensive walls of windows, great views and private outdoor space. These will be some of the mostspectacular apartments in SoHo and the city.