Answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Northern Pacific Railway Depot (Bismarck North Dakota) -  The Northern Pacific Railway Depot in Bismarck North Dakota was built in 1900. It is in Mission/Spanish Revival style and was designed by architects Reed & Stem.
Answer:
Building