Private Preserves in OhioSpecial places in Ohio, privately owned, but open to the public
Audubon Society of Greater Cleveland
With Four beautiful Sanctuaries, the Greater Cleveland Audubon Society is an important part of Ohio's system of publicly available natural lands. Their four Sanctuaries are in Aurora and Willoughby, in Northeastern Ohio, and all include hiking trails.
The Cleveland Museum of Natural History
The Cleveland Museum of Natural History maintains a collection of nature preserves that represent the broad spectrum of biological diversity found in Northern Ohio. With about 4,000 acres under protection, three of the museum's preserves are open to the public (Mentor Marsh, North Kingsville Sand Barrens, and Scheele Preserve).
The Holden Arboretum is approximately 4,000 acres of land in Kirtland, Ohio where Arboretum staff, volunteers and board strive to connect people with nature, foster learning, and promote conservation. The arboretum's land holdings include two National Natural Landmarks, Stebbins Gulch and Little Mountain.
The Nature Conservancy, Ohio Chapter
The largest of the international conservation nonprofits, The Nature Conservancy has protected 117 million acres of land from development around the world. Their mission is to "preserve the plants, animals and natural communities that represent the diversity of life on Earth by protecting the lands and waters they need to survive". In Ohio they have preserved, with their partners, about 35,000 acres, including four nature preserves which are open to the public.
The Wilderness Center
Located in Rural Stark County, the Wilderness Center is a nonprofit nature center with approximately 1300 acres of land, and six trails which extend for a total of about ten miles.