Milton Armory is a historic National Guard armory located at Milton Northumberland County Pennsylvania. It was designed by W.G. Wilkins Co.. It was built in 1922 and expanded in 1930. It is a T-plan building consisting of a two-story administration building with a one-story drill hall executed in the Tudor Revival style. It is constructed of brick and sits on a concrete foundation. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Building