Philadelphia possesses an exceptionally large number of places that have almost disappeared--from workshops and factories to sporting clubs and societies, synagogues, churches, theaters, and railroad lines. In Philadelphia: Finding the Hidden City, urban observers Nathaniel Popkin and Peter Woodall uncover the contemporary essence of one of America's oldest cities. Working with accomplished architectural photographer Joseph Elliott, they explore secret places in familiar locations, such as the Metropolitan Opera House on North Broad Street, the Divine Lorraine Hotel, Reading...