Open Space Institute

The Open Space Institute protects scenic, natural and historic landscapes to provide public enjoyment, conserve habitat and working lands and sustain communities.

Founded in 1974 to protect significant landscapes in New York State, OSI has been a partner in the protection of nearly 2.2 million acres in North America. A leader in environmental conservation, the Open Space Institute leverages our knowledge and attracts resources for strategic investments to make innovative land conservation happen.

All of OSI’s work is directed by a consistent conservation strategy that emphasizes permanent protection on a landscape-level scale. Each discrete transaction, whether buying a conservation easement on a small family farm in the Hudson River Valley or helping fund the purchase of 100,000 acres in Maine, represents an effort to align the pieces of the landscape puzzle, and prevents fragmentation, which disrupts key wildlife corridors, impairs water and air quality, and diminishes the beauty and scenery of natural areas.

We gratefully acknowledge that much of OSI’s work in New York State is accomplished through the Open Space Conservancy (OSC), OSI’s land acquisition affiliate, which received a permanent fund from the Lila Acheson and DeWitt Wallace Endowment in 2001.

Contact Open Space Institute

Kim Elliman
President and Chief Executive Officer
1350 Broadway
Suite 201
New York, New York  10018
Phone: 212-290-8200
Fax: 212-244-3441


Service Area

Statewide service provider in:
  • New York

To request additions or corrections to this entry email the Administrator
Related Success Stories for Open Space Institute

Appalachian Mountain Club Maine Woods Initiative
The AMC's Maine Woods Initiative is a strategy for land conservation that integrates habitat protection, recreation, education, and sustainable forestry in the 100-Mile Wilderness region of Maine.

Catawba River Streambank Conservation Easements
An unprecedented, voluntary effort by Crescent Resources, LLC is protecting nearly 200 miles of stream banks in North Carolina and South Carolina.