The World's Largest Round Barn is a name of the red fairground barn in Marshfield Wisconsin United States. Originally built in 1916 the barn was listed on the National Register of Historic Places as the Central Wisconsin State Fair Round Barn in 1997. 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?
Building