 In 1860 the first Harrison County fair was held in Corydon . The county fair has been an annual event since then and is the longest continuously running fair in the state . The county fairgrounds were built in the southwest corner of Corydon where the home of Edward Smith formerly stood . The fair 's original grandstand burned in 1960 and the county purchased a new grandstand from the minor league baseball team at Parkway Field in Louisville , Kentucky . 
