Hillsboro Heritage Day gives current and former residents of this small rural town in Loudoun County to celebrate its history and its future. World War I Era Heritage Day theme in Hillsboro. Three days of events starting Sept 29th ending with our 3rd annual Heritage Day on Oct 1st. Check out the Friends of the Old Stone School website to buy tickets and get more information. www.OldStoneSchool.org. This event is hosted by the Town of Hillsboro to raise money for the old school and the new school. Proceeds will go to Friends of the Old Stone School and the Hillsboro Charter Academy.