402 West 20th Street

Rising with quiet authority along one of Chelsea's most enchanting blocks, the Donac stands as a rare surviving expression of the neighborhood's earliest visionaries. Conceived in 1898 by celebrated mansion architect C. P. H. Gilbert, whose body of work includes the Warburg Mansion (now the Jewish Museum), the Cartier Building, and the Upper East Side's Woolworth Mansions, this graceful, 24-foot-wide...