This $22 Million Penthouse Tops a Landmarked Upper West Side Building

The Chatsworth has been part of the Upper West Side skyline for more than a century. Completed in 1904 just steps from Riverside Park, the landmarked Beaux Arts building is one of those classic New York addresses that feels tied to another era, with its stately limestone facade embellished with carved cherubs and decorative shields and capped by a towering mansard roof. Over the years, it has drawn its share of notable residents, including Susan Sarandon, while Conan O’Brien reportedly…