The Arsenal is a symmetrical brick building with restrained Gothic Revival details, located in Central Park near the Central Park Zoo at 64th Street and Fifth Avenue. Built between 1847 and 1851 as an armory for the New York State Militia, it predates the park itself and is the second-oldest surviving structure in Central Park. The building features brick laid in English bond, a fortified central block, and flanking half-octagonal towers. Its carved doorway displays martial symbols, including a bald eagle, cannonballs, sabers, and pikes.
Once threatened with demolition, the Arsenal was repurposed and renovated in the 20th century. Today it houses offices for NYC Parks and related organizations, the Arsenal Gallery, and the Central Park Zoo. Over time, it has also served as a zoo, police precinct, weather bureau, and temporary home for the American Museum of Natural History. The original Greensward Plan for Central Park is preserved on its third floor.