At OSI, we protect land for people, for habitat, forever. Learn More About Who We Are
A Place for Life
What We Protect
We protect land that supports the things we can’t live without — like clean water, climate protection, and healthy communities — and safeguard the places that make life worth living, like parks for recreation and plant and animal habitat.
How We Do It
Over the past 40 years, we’ve helped save millions of acres through land acquisition, funding, and research and advocacy. We’re also increasing access to the great outdoors through our support of grassroots efforts and park enhancement projects.
New & Noteworthy
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Featured News With OSI’s Help, New York State Officially Opens New Thacher Park CenterOfficials, community leaders and park lovers joined together to celebrate the opening of a new Thacher Park Center, launched with the help of a private fundraising campaign spearheaded by OSI.
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Featured News OSI-owned Marion River Carry added to State Forest PreserveOSI's Marion River Carry property is now officially part of the Adirondack Forest Preserve, allowing the state to resolve a more than 100-year-old dispute with residents within Township 40 areas of Raquette Lake.
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What You Can Do
Donate to support OSI’s work
Become a part of our mission to safeguard at-risk places through your tax-deductible gift.
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