"The Laurance S. Rockefeller Preserve is a 1 ,1 06-acre refuge within Grand Teton National Park at the southern end of Phelps Lake. The preserve, opened to the public in the fall of 2007, was generously donated to the national park by Laurance S. Rockefeller, son of John D. Rockefeller. For nearly 70 years, the site (formerly known as the JY Ranch) served as a summer retreat for the Rockefeller family. Over the course of three years, before public access was open to the preserve, 30 log buildings and other ranch structures were moved off-site or demolished and two roads were removed.
The land was returned to its natural state, restoring wetlands, reducing non-native vegetation, and improving the wildlife habitat. Eight miles of hiking trails were developed, forming a series of loops through the 1 ,1 06-acre preserve. The trails begin at the Rockefeller Preserve Center, a 7,500-square-foot visitor center. Its green technology includes solar power energy and composting toilets."