When built in the early 20th century it was one of the first armories in New York City built in the Neoclassical style, instead of the Gothic Revival mode favored during the 19th century. It was home to the 22nd Regiment of the Army Corps of Engineers and was used to give licensing exams for those who wished to become architects, engineers, nurses. etc. The interior retains much of its original finish. Rooms have terrazzo floors, glazed brick walls trimmed in terracotta. The cross-vaulted ceilings are sheathed in tiles laid in chevron patterns and have glazed terra cotta architraves at their entrances. It is now home to The Armory Foundation, which is widely regarded as one of the premier indoor track and field facilities in the United States.