Barriers to tourism for people living with disabilities can range from the obvious, such as an out-of-service elevator, to an outing that’s too long or a setting that’s too loud. Tourist destinations that want to be truly accessible need to accommodate visitors with visible and invisible disabilities. In recent years, museums and other cultural institutions worldwide have added specialized guides and barrier-free tours for people who are deaf or hard of hearing, use wheelchairs, or with autism or dementia. Tourism agencies dedicated to serving these populations have sprung up, too. Disabled travelers also have created their own websites to share and exchange information.