Most park facilities were constructed between 1930 and 1960. Some have been upgraded for handicap accessibility, while others can be used with some assistance. Because of the park's natural terrain, only a 1/2-mi section of the Rim Trail between Sunset and Sunrise points is wheelchair accessible. The 1-mi Bristlecone Loop Trail at Rainbow Point has a hard surface and could be used with assistance, but several grades do not meet standards. Handicapped parking is marked at all overlooks and public facilities. Accessible campsites are available at Sunset Campground.