We noticed that you're using an unsupported browser. The TripAdvisor website may not display properly.We support the following browsers:
Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.

Aspen Center for Environmental Studies

100 Puppy Smith St, Aspen, CO 81611-1451
+1 970-925-5756
Review Highlights
Up close to nature

This nature center has a variety of birds and habitats. The staff was very friendly and kept the... read more

Reviewed 4 October 2017
Pamela J
Saint Paul, Minnesota
A Gem Not to Be Missed

We loved our visit to ACES. There is a beautiful walking trail that travels around Lake Hallam. It... read more

Reviewed 29 September 2017
Ann C
via mobile
Read all 66 reviews
Map updates are paused. Zoom in to see updated info.
Reset zoom
Updating Map...
The Hallam Lake Nature Preserve, a wild place in the heart of Aspen, features an Environmental Learning Center, resident birds of prey, an indoor trout stream, a nature trail loop, bird watching, a naturalist on site, and programs all year round. Free to visit!
  • Excellent76%
  • Very good24%
  • Average0%
  • Poor0%
  • Terrible0%
Travellers talk about
“golden eagle” (7 reviews)
“snow shoe” (5 reviews)
Closed Now
All hours
Hours Today: 9:00 AM - 5:00 PM
100 Puppy Smith St, Aspen, CO 81611-1451
Write a ReviewReviews (66)
Traveller rating
Traveller type
Time of year

1 - 10 of 63 reviews

Reviewed 4 October 2017

This nature center has a variety of birds and habitats. The staff was very friendly and kept the kids engaged.

Thank Pamela J
Reviewed 29 September 2017 via mobile

We loved our visit to ACES. There is a beautiful walking trail that travels around Lake Hallam. It seems like a Walden. There is a beaver dam and many beautiful sights. There is a regal golden eagle who lives there along with a red tailed...More

Thank Ann C
Reviewed 6 September 2017

Very nice small preserve in town. Short walk very easy. Many places to sit and contemplate. We enjoyed the peace and quite. Very helpful nature guidebook.

Thank marvin b
Reviewed 28 June 2017 via mobile

The guide we had kept us motivated and engaged the whole way up to crater lake. She was knowledgeable about history, vegetation, geology, and environmental issues. I cannot believer this is a free service, but we will be donating to the AES to support that...More

1  Thank Susan T
Reviewed 16 June 2017

Our family of 18 took a private tour with two terrific ACES guides for a couple of hours and learned so much in that short time about the local wildlife, flowers and trees. We met the three resident wild Raptors (Great Horned Owl, Red-Tailed Hawk...More

Thank boudin
Reviewed 11 April 2017

Attended the Christmas Open House and had a great time. Loved everything about ACES. Bonfire, Aspen Brewery craft brews,tasty appetizers and beautiful setting. Highly recommend!! Love the resident raptors!!!

Thank Snoil54
Reviewed 29 March 2017

What a treat! In Aspen, see live birds of prey, and take a nature walk along trails near beautiful dams. Abundant waterfowl. In Basalt, visit a working farm with many animals and vegetable greenhouses. Great activity books for children. Highly recommended. Very friendly and engaging...More

Thank DRS69
Reviewed 15 March 2017 via mobile

We booked a snow shoe tour with ACES and did the Ashcroft Snow Shoe tour. This was my first time to Aspen or Colorado. We enjoyed our Snow shoeing and it was a lot of fun!!! Going to Pinecreek Cookhouse was also a neat experience...More

Thank Patty M
Reviewed 26 September 2016

Wonderful field classes and interesting indoor talks for adults and children - peaceful spot at the edge of town - has evolved with Aspen over the years and getting better all the time!

Thank Snowwillow
Reviewed 28 July 2016 via mobile

I have been coming to aspen many years and aces is always a family favorite. The preserve is amazing with short and easy trails to take in the serenity. Plan to spend 30min to 1hr here.

1  Thank bayardyoung
Nearby Restaurants
The White House Tavern
1,109 reviews
.55 km away
The J-Bar at the Hotel Jerome
500 reviews
.51 km away
445 reviews
.50 km away
Steak House No 316
311 reviews
.57 km away
Nearby Attractions
Maroon Bells
2,052 reviews
.35 km away
The John Denver Sanctuary
522 reviews
.55 km away
Aspen Brewing Company
136 reviews
.56 km away
Ask a question
Questions & Answers
McCabe W
9 September 2017|
Response from Snoil54 | Reviewed this property |
We did not pay admission when we visited.