Orient Land Trust is one of the most storied naturist locations in the United States. This Colorado territory is the perfect conjunction of The Naturist Society + The Nature Conservancy (and a half dozen other organizations as well). The huge acreage includes numerous hiking trails, a ranch, a mine, and so much more. Their comprehensive programming lists a bat cave tour, astronomy hikes, and many other options. The best known part of the park is the area called Valley View Hot Springs, so named for the view of San Luis Valley from these natural thermal baths.