At OSI, we protect land for people, for wildlife, 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 OSI Announces Million-Dollar Plan to Improve its Tahawus Property in the AdirondacksOSI has announced a plan to make $1 million in capital improvements at its historic Tahawus property, where Theodore Roosevelt was staying when he received the message that he was to become President.
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Featured e-News AUGUST: FOCUS ON RECREATIONFrom renovating a beloved performing arts center in Harlem to South Carolina's Jones Gap State Park, and places in between, OSI supports and expands places to play.
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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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