Aspen Center for Environmental Studies (ACES)

The Aspen Center for Environmental Studies (ACES) is dedicated to "educating for environmental responsibility". Founded in 1968, ACES provides innovative programming for all ages, inspiring a lifelong commitment to the Earth. ACES operates three locations in the Roaring Fork Valley: Hallam Lake, Rock Bottom Ranch, and the Catto Center at Toklat. Located on Hallam Lake, a 25-acre nature preserve in Aspen, ACES offers a tranquil escape with a half-mile loop nature trail meandering through diverse habitats. Visitors can spot local wildlife like deer, foxes, beavers, and various bird species. The visitor center features an indoor trout stream with native cutthroats, an environmental library, and a gift shop. ACES provides numerous natural science programs throughout the year, including naturalist-guided walks, bird of prey demonstrations, and snowshoe hikes in the winter. The center also rehabilitates injured birds of prey. ACES collaborates with various organizations to promote environmental awareness and stewardship. The new Kanders Family Science Teaching Lab features interactive exhibits to inspire exploration of the natural world. Whether you're a nature enthusiast or simply seeking a peaceful retreat, ACES offers an enriching experience in the heart of Aspen.