From irrefutable icons (Broadway theaters, Central Park, SoHo, Carnegie Hall), to lesser-known structures including the Cyclone rollercoaster on Coney Island, roughly one hundred street lampposts, and seven cast-iron street clocks throughout the city - much of what makes New York City unique owes its existence to the New York City Landmarks Law. Born out of the destruction of McKim, Mead & White's monumental Pennsylvania Station, the...