Guided Tours. A park ranger leads a group through the reconstructed north gate of the prison. NPS/H. Peacock. A narrated audio driving tour available on CD and flash drive allows visitors to explore both the National Cemetery and the Prison Site. The audio tour is loaned out upon request at the museum front desk. This one-hour, self-guided tour will direct you to special points of interest and is available until 3:15 p.m. daily. The disk, drive, or cassette must be returned to the museum no later than 4:30 p.m.