An Old Round Barn in Ross County, Ohio Round barns are a unique part of Ohio’s farm history. Built mostly in the late 1800s and early 1900s, they were designed to make farming more efficient. The circular shape made it easier to move feed and livestock, and the structure was stronger against wind and weather. Many were built from local timber and stone, showing the craftsmanship of rural builders. The red-roofed round barn in Ross County, Ohio, is a great example of this hist