The National Folk Festival is returning to Greensboro for its third and final year. This year’s gathering marks the 77th year of the festival’s cherished history. In 2016, nearly 140,000 people attended the event, and speculation points to an even larger turnout this year. The event runs from September 8 through the 10 and aims to celebrate American culture and heritage in all of its rich and diverse forms, all free of charge.