990 Fifth Avenue ca. 1927 Built on the site of the grand Woolworth Mansion in 1927, 990 Fifth Avenue, designed by Rosario Candela, is only slightly less luxurious. 14 stories high, Candela designed the building to have only six apartments (5 duplex, and 1 triplex.) With a limestone facade and elegant detailing in a neo-Italian Renaissance design, 990 Fifth Avenue served as the epitome of how in the 21st century lavish homes were moving skyward.

Rosario Candela played a major role in shaping the architectural legacy of 20th-century Manhattan: the distinctive "prewar apartment buildings that define the cityscapes of streets like Park and Fifth Avenues and Sutton Place." Even today, almost a century after they were built, Candela's buildings rank among the most prized in the city.