The museum is wheelchair accessible. All exhibit floors are accessed by ramps with elevators serving the exhibit floors in the main building. Wheelchairs are available on a first-come, first-served basis from the Ticket Counter on the main floor of the main building. Most of the exhibits are interactive and offer tactile, hands-on experiences, with many of the hands-on features set at wheelchair-friendly level. An aide accompanying a visitor with a disability is admitted at no charge. ASL interpreters and sighted guides are available with prior notice. Requests for tours, guides, etc., should be made at least two weeks in advance.