The Centennial Arboretum was gifted to SUNY Oswego in 1961 by the community of Oswego, NY to commemorate the centennial year of the institution.
The arboretum was originally centrally located on campus, but the campus subsequently tripled in size, leaving the arboretum on the edge of campus and largely forgotten. In 2021, the Oswego Tree Stewards, the Office of Sustainability, and Rice Creek Field Station banded together to revitalize the Centennial Arboretum by planting 21 new trees. The Arboretum is located at the corner of Sixth Avenue and George Washington Boulevard.