Donor Circles

Donor Circle contributions have an extraordinary impact. Members enjoy special invitations to meet with pioneering environmental leaders and scientists and are provided premium access to ACES Programs and events. Make a gift to ACES of $1,200 or more and join a community of environmental leaders who believe in improving the planet through environmental science.

STEWARD | $1,200

All general membership benefits +

  • One complimentary gift membership to share with a friend
  • Special invitations to cocktail receptions and dinners
  • 20% discount on ACES Shop purchases
  • Invitations to ACES Edventure events
  • Recognition at ACES visitor centers


ADVOCATE | $2,500

Steward Donor Circle Benefits +

  • Special access and reserved parking at ACES Annual Harvest Party
  • Personal tour of ACES sites with CEO (by appointment)


INNOVATOR | $5,000

Advocate Donor Circle Benefits +

  • Private tour of your choice with ACES’ Director of Naturalist Program for up to five guests
  • Special sustainable holiday gift 


BENEFACTOR | $10,000

Innovator Donor Circle Benefits +

  • Ashcroft tour for two with lunch at Pine Creek Cookhouse with ACES CEO



Benefactor Donor Circle Benefits +

  • Reserved seating at all ACES events


Restorer’s Circle Benefits +

  • Additional benefits and naming opportunities (based on the donor’s areas of interest.)

For more information or to discuss membership in ACES’ Donor Circles, please contact Christy Mahon, Development Director at or 970.925.5756. Aspen Center for Environmental Studies is a 501(c)(3) nonprofit organization. All gifts are tax-deductible to the extent allowed by law.