42nd Street is one of the most popular and frequently visited street in Manhattan. It's the home to site such as Broadway and Off-Broadways Theaters, Grand Central Station, the New York Public Library, Bryant Park and the Chrysler Building to name a few. But did you know, that there used to be building such as the Crystal Palace, the Latting Observatory, the Astor Hotel, the Opera House, and a Croton Reservoir on or around 42nd Street? Come take a stroll down this ever-changing street and learn its past and present history.