The National Park Service unit covers several sites in and around Plains. The main visitor centre is in the former Plains High School and runs short orientation films, has the largest exhibit on the Carter presidency, and is the starting point for self-guided walking tours of the town. Admission is free.
Allow at least three hours. The visitor centre alone takes 45 minutes if you watch the films and read the exhibits; the depot is 15 minutes; the boyhood farm in Archery another 90 minutes including the drive. The park keeps generous hours (9–5, seven days), and rangers are unusually willing to take time with visitors.