Round Barns, which include truly round and many sided, can be found in many parts of the USA. The largest concentrations of this style of barn are found in the midwest (Indiana, Illinois and Wisconsin). Here in Vernon County we have more round barns than any other county in the USA. Some of these unique barns are being preserved and taken care of while others are deteriorating and falling apart. Most round barns are built with a silo in the center of the barn. The round shape was supposed to make work in the barn, i.e. feeding or milking cows, more efficient. The Hillsboro area is home to at least eight round barns, some are still in service. Craftsmen from this community built most of Vernon County's historic round barns. A state historical marker in Hillsboro tells the story of "Cheyenne Valley" just 10 miles west of Hillsboro on highway 33.