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    Tuesday Birding at Hallam Lake

    Every other Tuesday, varying times 

    Tuesday Birding at Rock Bottom Ranch

    Every other Tuesday, varying times 

    Rock Bottom Ranch

    Pollination Ecology: Biology of a Partnership

    Jul. 13th, 9:00am to 4:00pm Hallam Lake
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ACES Educator-in-Training Volunteer

ACES Educator-in-Training Volunteer

Jul. 4th, 9:00am to Sep. 2nd, 4:00pm

Are you a high school student interested in the field of environmental education.

ACES Summer Camp

ACES Summer Camp

Jul. 4th, 9:30am to 3:30pm

General registration is OPEN.

Raptor Fair

Raptor Fair

Jul. 5th, 3:00pm to 5:00pm

Join us at Hallam Lake for our 9th annual Raptor Fair, a free community event for all ages.

Know Your Trees | Tree Identification Walk

Know Your Trees | Tree Identification Walk

Jul. 11th, 4:00pm to 5:00pm

Advance registration is required.

Pollination Ecology: Biology of a Partnership

Pollination Ecology: Biology of a Partnership

Jul. 13th, 9:00am to 4:00pm

The science of pollination biology is less than a century and a half old, and its popularity as a field of investigation has increased substantially only in the last fifty years.

The Intersection of Climate, Democracy, and Geopolitics: A Conversation with Thomas L. Friedman

The Intersection of Climate, Democracy, and Geopolitics: A Conversation with Thomas L. Friedman

Jul. 22nd, 5:00pm to 6:00pm

ACES and

Walk on the Other Side Walks

Walk on the Other Side Walks

Jul. 27th, 9:00am to Sep. 8th, 1:00pm

Join ACES Director of Naturalist Programs, Jim Kravitz on this rare opportunity to discover the far side of the North Star Preserve, which is otherwise closed to the public.

Colorado Mushrooms: A World of Wonder at your Feet

Colorado Mushrooms: A World of Wonder at your Feet

Jul. 28th, 9:00am to 4:00pm

Join mycologist Dr.

ACES Annual Mushroom Fair

ACES Annual Mushroom Fair

Jul. 29th, 1:00pm to 4:00pm

Join visiting fungi expert Dr.

Stars Above Aspen

Stars Above Aspen

Aug. 4th, 6:00pm to 10:30pm

Aspen Center for Environmental Studies invites you to the top of Aspen Mountain for our annual Stars Above Aspen Astronomy Night on Thursday, August 4 from 6:00-10:30pm.

Stories Told by Trees Walk: Forest Recovery from the Lake Christine Fire

Stories Told by Trees Walk: Forest Recovery from the Lake Christine Fire

Aug. 15th, 9:00am to 1:00pm

The forest ecosystems affected by the 2018 Lake Christine Fire have many stories to tell.

Jessica Catto Dialogue: Climate Change and Megafires in Our Backyard

Jessica Catto Dialogue: Climate Change and Megafires in Our Backyard

Aug. 18th, 6:00pm to 7:00pm

Join ACES at the Hotel Jerome for an Jessica Catto Dialogue on August 18 from 6-7pm.

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Rock Bottom Ranch

Tuesdays - Fridays, 9am-4pm
Saturdays, 9am-1pm
Tel: 970.927.6760

2001 Hooks Spur Road
Basalt, CO 81621

Hallam Lake

Mon - Fri, 9am-5pm
Sat, 9am-5pm in summer
Tel: 970.925.5756

100 Puppy Smith Street
Aspen, CO 81611

Catto Center at Toklat

Closed for renovations until spring 2023
Tel: 970.925.9157

11245 Castle Creek Road
Aspen, CO 81611

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