The grounds of Indian Steps Museum and the adjacent Ulmer-Root-Haines Memorial Trail are a wildlife sanctuary operated by the Conservation Society. The grounds contain an abundance of native flora and fauna. Among them is a 350 year old holly tree that is believed to be the largest American holly tree in this latitude. The tree is 65 feet tall and its branches spread 65 feet as well. The circumference of the trunk, two feet above the ground, is 76 inches. There is a self-guided historical nature trail and picnic facilities on the grounds. The grounds also contain an ice house, summer kitchen, pond, and a scenic view of the Susquehanna River.