Architect Nick Potts in New York City for a walking tour of the Upper West Side. At the turn of the century, apartment hotels such as The Dakota and The San Remo started populating the Upper West Side. Servants’ quarters, elevators, and the realization of views were making apartment living more appealing to the upper middle classes and increasing the value of the top floors. Join Nick for an in-depth look at how the Upper West Side revolutionized apartment living and became the birthplace of the penthouse in Manhattan.