Wesselman Woods Nature Preserve is a 240-acre nature preserve located in Evansville, Indiana. It is a National Natural Landmark and a State Nature Preserve owned by the City of Evansville and operated by the non-profit Wesselman Nature Society. The preserve consists of over 190 acres of virgin bottomland hardwood forest complemented by an additional 50 acres of younger forest, field, and pond. The woods consist of sweetgum, sugar maple, tulip tree, Shumard oak, and green ash throughout.