For most of its history, New York was a horse-powered city, and some of New York’s most powerful citizens kept their horses on the Upper East Side. Residents such as Joseph Pulitzer, William C. Whitney, and Edward Harkness turned to such illustrious architects as Richard Morris Hunt and James Gamble Rogers to design private carriage houses complete with stables for horses, and apartments for groomsmen and coachmen. On this virtual tour with historian Lucie Levine, we will compare the gilded mansions of 5th Avenue with their attendant carriage houses, usually stationed east of Lexington Avenue. We’ll consider the evolution of these structures, to modern garages or private homes, and trot through the neighborhood in search of further examples of a city built for horses. From armories that once housed mounted regiments, to the horse troughs that still serve the carriage trade on Central Park South, we’ll consider how horsepower shaped the architectural fabric of the Upper East Side.