Referred to by the Times as "surely the greatest maisonette ever constructed in New York," the 21-room apartment occupies three floors of the distinguished co-op at 660 Park Avenue. The apartment ...

Lauder, the granddaughter of Estee Lauder, founder of the eponymous world-renowned fashion brand, sold her co-op unit at 660 Park Avenue for $19.5 million after buying one for $47 million at 960 ...

Liposuction pioneer Dr. Paul M. Striker sold his offices at 660 Park Avenue to another New York beauty maven, Aerin Liposuction pioneer Dr. Paul M. Striker sold his offices at 660 Park Avenue to ...