The original design has been changed little. In 1965, a curtain and track were added to the stage. In the 1970s, the Feld Brothers added a three-pole circus tent to cover part of the stage which was changed to a truss and canvas roof system by the Shakespeare Theatre Company in cooperation with NPS in 1991. In the early 1990s, the NPS renovated the public restrooms, repaired the roofs, and did some electrical upgrades in the backstage area. Between the 2003 and 2004 summer performance seasons, all new seats were installed and the drainage in the seating area was improved. Electrical service and wiring was also updated. A major renovation project to the stage area is planned for the future.