9. The Park Avenue Armory Was Originally Built as a Three-Story Building

Vintage Park Ave Armory three stories Untapped Cities AFineLynePark Avenue Armory image. In public domain from New York State Military Museum

The original Park Avenue Armory was built in 1877-1881. In 1909, significant changes were made, adding a fourth and fifth floor, removing the bell tower, and giving the facade the feeling of a fortress. The armories of that time were looked upon as symbols of law and order, and it was felt that these changes represented that image.