At OSI, we protect land for people, for wildlife, forever. Learn More About Who We Are
A Place for Life.
2022 Annual Report
Dive into an array of OSI's highlights from the past year. The projects showcase the tangible benefits derived from smart, effective, high-impact conservation work.
What We Protect
New & Noteworthy
Featured News Open Space Institute Begins MacNaughton Cottage Rehabilitation in the Adirondacks
OSI today announced the start of investigative and structural work on the historic MacNaughton Cottage, located at the OSI-owned and managed 212-acre Adirondac Upper Works property in the Adirondacks. The first phase of improvements to MacNaughton Cottage will focus on interior demolition and clean-up to ensure stabilization of this important historic structure.Read More
Featured News OSI Begins Final Improvement Project at Fahnestock’s Hubbard Perkins Loop Trail
The Open Space Institute (OSI) today announced the start of the final project of their improvement plan for Clarence Fahnestock Memorial State Park—construction of a 65-foot pedestrian bridge and streambank stabilization along the Hubbard Perkins Loop Trail.Read More