Colorado › Aspen › ACES Hallam Lake Nature Preserve
ACES Hallam Lake Nature Preserve — Aspen, Colorado
ACES Hallam Lake Nature Preserve in Aspen: best for ages 0-2, 3-5, 6-8, 9-12, 13-17; Preserve admission was not listed on the ACES homepage checked Nov 2, 2026 — the site says the preserve is open to the public year-round but makes no free-admission statement.
Address100 Puppy Smith Street, Aspen, CO 81611 (address from ACES' official brochure; the homepage location list does not repeat the street number)
HoursMon–Sat 9am–5pm per the ACES homepage location list (the homepage and ACES' official brochure differ on Saturday hours — worth a quick check on the official site before a Saturday visit)
PricesPreserve admission was not listed on the ACES homepage checked Nov 2, 2026 — the site says the preserve is open to the public year-round but makes no free-admission statement
Age notes25-acre nature preserve on the Roaring Fork River in downtown Aspen, run by the Aspen Center for Environmental Studies, which describes its programs as immersive experiences for all ages. Open year-round, with seasonal winter programming.
BookingWhether a self-guided preserve walk needs any sign-up was not stated on the homepage; guided programs and classes register through the ACES events pages.
Suggested timeAbout 1.5 hours
AccessibilityNot confirmed on the official pages checked — no accessibility claim is made.
Official website ↗ · Directions ↗
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Venue details last verified October 31, 2026 against official sources. Hours and prices change — check the official site before you go. FamilyDay AI is a free planning tool for parents; we list only facts we have verified, and we never invent ratings or reviews.