Downtown Richwood Historic District is a national historic district located at Richwood Nicholas County West Virginia. The district includes 51 contributing buildings in the central business district of Richwood. They consist of mostly two and three-story masonry commercial buildings from the late 19th and early 20th century. They have storefronts on the first floor and house on the upper floors. Notable buildings include the U.S. 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