The Irvine Ranch Land Reserve Trust is a California non-profit organization created to ensure long-term
success of the 50,000 acre Irvine Ranch Land Reserve encouraging public access and environmental stewardship.
The Irvine Ranch Land Reserve ® -more than 50,000 acres of permanently protected open space in the heart of Orange County, California offers a rich menu of recreational opportunities, from hiking and horseback riding to bird-watching and picnicking. On October 10, 2006, nearly 75 percent of the IRLR - approximately 37,000 acres - was designated as a National Natural Landmark by the U.S. Department of Interior, recognizing the land as a nationally significant natural area.
The Nature Conservancy, one of the world's premier land conservation organiza- tions, serves as steward of the major wildlands on the Reserve.