Accessibility in the Park. Accessibility in the Park - Gettysburg National Military Park (U.S. National Park Service) For Those With Mobility Impariments: The Wills House is fully accessible. Restrooms are located on the first floor and access to the second floor is by elevator. For those with hearing or sight impariments, there is a variety of written information and sound assistance devices available for your use. Ask at the information desk for assistance.