Aspen Center for Environmental Studies (ACES)
Explore Aspen's natural side with interactive exhibits, wildlife sightings & naturalist-led programs at this environmental education center.
The Aspen Center for Environmental Studies (ACES) is a non-profit environmental education organization offering immersive experiences at Hallam Lake Nature Preserve in the heart of Aspen. Visitors can explore trails, observe wildlife, and participate in naturalist-led programs focused on ecological literacy, forest health, and more.
A brief summary to Aspen Center for Environmental Studies
- 100 Puppy Smith St, Aspen, Colorado, 81611, US
- +1970-925-5756
- Visit website
- Monday 9 am-5 pm
- Tuesday 9 am-5 pm
- Wednesday 9 am-5 pm
- Thursday 9 am-5 pm
- Friday 9 am-5 pm
Local tips
- Bring binoculars for enhanced wildlife viewing along the Hallam Lake trails.
- Check the ACES website for a schedule of naturalist-guided walks and programs.
- Visit the indoor trout stream at the visitor center to see native Colorado River cutthroat trout.
Getting There
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Walking
From downtown Aspen, ACES is an easy walk. Head north on Mill Street, then turn left onto Puppy Smith Street. Continue past the post office; the road dead-ends at ACES. Walk down the driveway to the visitor center.
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Public Transport
The Roaring Fork Transportation Authority (RFTA) provides free bus service within Aspen. Ride any free in-town RFTA bus to Rubey Park. From Rubey Park, it's a short walk north on Mill Street, then a left onto Puppy Smith Street to ACES. RFTA bus service from Aspen/Pitkin County Airport is free to Aspen.
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Parking
If driving, follow directions to 100 Puppy Smith Street. Turn left at the gate to access the parking area. Parking is limited. Street parking is available in Aspen, with pay stations costing $2-$6 per hour. The Rio Grande Parking Plaza offers hourly/daily rates.
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