Batesville, In. — The January-February issue of Outdoor Indiana magazine features a cover story on the movement to preserve the Hoosier state’s round and polygonal barns.Such barns were always rare, even in their heyday. At least 226 such barns were built in Indiana between 1874 and 1936, more than in any other state. Only 73 are left. A registry of round or polygonal structures in Indiana is here.Get more information at Outdoor Indiana.