About ACES

The Aspen Center for Environmental Studies (ACES) is a nonprofit environmental education center with three locations.

ACES provides a variety of natural science programs for people of all ages and interests on a year-round basis.

Please contact us for more information about membership and our programs.



Mission Statement

ACES' mission is to inspire a life-long commitment to the earth by educating for environmental responsibility, conserving and restoring the balance of natural communities, and advancing the ethic that the Earth must be respected and nurtured.
The philosophies upon which ACES was founded continue to inspire our daily work. We aim:
  • To acquire an intimate knowledge of the language of place — that is, to have ecological literacy so the surrounding landscape is perceived as a living, breathing, familiar presence. Knowledge is our goal, in part.
  • To care by making emotional connections through a wealth of experience in nature and by rationally grasping the importance of diversity and stability of ecosystems to environmental and human health. Caring is an essential element of ACES work.
  • To develop and share the skills needed to be actively involved in the careful stewardship of our local environment, accomplishing this through hands-on work to protect and restore the balance of ecosystems with which ACES is entrusted. Through knowledge and caring comes meaningful action.

ACES believes these three philosophies inspire a life-long commitment to sustaining a healthy environment.
The Aspen Center for Environmental Studies (ACES) is a non-profit environmental education center, now with THREE locations:


ACES at Hallam Lake in Aspen
WINTER HOURS: Mon - Fri: 9am - 4:30pm
Tel: 970.925.5756
Fax: 970.925.4819
aces@aspennature.org
100 Puppy Smith St.
Aspen, CO 81611

ACES at Rock Bottom Ranch in Basalt
WINTER HOURS: Mon - Fri: 9am - 5pm
Tel: 970.927.6760
Fax: 970.927.6703
rockbottom@aspennature.org
2001 Hooks Spur Road
Basalt, CO 81621

ACES at Toklat in Castle Creek Valley
WINTER HOURS: Call for information
Tel: 970.925.9157
Fax: 970.925.4819
toklat@aspennature.org
11247 Castle Creek Road
Aspen, CO 81611

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