Warren Armory is a historic National Guard armory located at Warren, Warren County, Pennsylvania. It was built in 1909, and is a 2 1/2-story, brick building with a gambrel roof in the Romanesque style. The drill hall is located on the second floor. It has a projecting central entrance bay, stone sills and lintels, brick turrets, and a crenelated parapet. It was added to the National Register of Historic Places in 1991. References Armories on the National Register of Historic Places in Pennsylvania Romanesque Revival architecture in Pennsylvania Infrastructure completed in 1909 Buildings and structures in Warren, Pennsylvania National Register of Historic Places in Warren County, Pennsylvania