Hagley is where the du Pont story begins! Set on 235-acres along the Brandywine River, Hagley Museum and Library includes the original Du Pont Company powder mills & the first du Pont family home in America and includes exhibitions, demonstrations, guided tours, and walking trails. We recommend a minimum visit of 3 hours. Hagley is open daily at 10 AM. Closed Thanksgiving Day and Christmas Day. Admission for Adults: $14, Children (6-14): $5, Students and Seniors: $10. are FREE Admission is free for Children 5 and under, Hagley Members, and current military personnel and their families (Please show your military identification at the ticket desk in Hagley's Visitor Center).