Anthony Park, host of Robb Report’s Ultimate Homes series, takes us inside an $85 million townhouse on New York’s Upper West Side. The 20,000-square-foot mansion encompasses eight floors linked by an elliptical limestone staircase as well as a commercial-grade elevator. Ample entertaining spaces include a 38-foot-wide, double-height living room that overlooks a sunken courtyard garden and a kitchenette-equipped penthouse lounge that spills out to a wrap-around roof terrace. Five bedrooms include a full-floor primary suite with dual baths and a private study, and the whole shebang sits atop a three-level entertainment complex with an indoor pool, yoga studio, home theater, and at-home spa. And, up in Connecticut, a waterfront home once owned by Phil Donahue and Marlo Thomas has floated onto the market at $27.5 million. Should the 6.6-acre spread fetch anywhere near its asking price, it will set a record as the coastal town of Westport's most expensive home.

Ultimate Homes: This $85 Million Manhattan Townhouse Is a Gilded-Age Manse for Modern Times

The 20,000-square-foot mansion has a lap-length indoor pool and a wrap-around roof terrace.

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