Celebrating 50 years of saving land for people, for wildlife, forever
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 the support of grassroots efforts and park enhancement projects.
New & Noteworthy
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Featured News Open Space Institute Launches O&W Trail Corridor Study
Community input and engagement are sought for OSI-led plan to establish a 57-mile corridor across three Hudson Valley counties.
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Featured News OSI Welcomes Erik Kulleseid as New President & CEO
During his original eight-year tenure at OSI, Kulleseid launched OSI’s Parks initiative, which has grown into a programmatic pillar with transformative projects in New York, New Jersey, and South Carolina.
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