Visitors to the Hal Tyrrell Trailside Museum of Natural History will discover displays of live native animals, colorful wildflower gardens, information about local wildlife and their habitats, and more.
On this page:
- Location, Hours & Things to Do
- Trails
- Fishing at Thatcher Pond
- Education
- History
- Events
- Volunteer
- Rules

Location, Hours & Things to Do
Trailside Museum of Natural History
Things to Do & Amenities
- Parking
- Nature Center
- Nature Play
- Accessible Indoor Bathroom
- Trail Access
- Hiking & Walking
- Bicycling
- Fishing
- Birding Hotspot
- Volunteer Opportunities
- No Dogs
- Service dogs are allowed at most public locations. View accessibility policies.
Hours
Mar - Oct: 9am - 5pm, closed FridaysNov - Feb: 9am - 4pm, closed FridaysClosed Thanksgiving, Christmas, New Year's DayClosures & Alerts

Trails
Miles of unpaved walking trails at Trailside Museum wind through Thatcher Woods' beautiful oak woodlands and floodplain forest.
Surface
UnpavedEstimated Total Length
4.9 milesThings to Do
Hours
Year-round: Sunrise to SunsetClosures & Alerts
Fishing at Thatcher Pond
This 1.5-acre pond, next to the Trailside Museum of Natural History parking lot, is an old oxbow of the Des Plaines River and is prone to flooding. Its fish population is heavily influenced by the river.
Education
Complement your curriculum and help meet standards by taking your classroom outdoors with a visit to a local preserve or nature center. Learn about the region’s plants, animals, and natural communities by walking nature trails, meeting live ambassador animals, or participating in field science labs.
Educators are encouraged to explore our Guided Learning opportunities for field trips and in-classroom programs. Teachers also have access to Educator Resources, which include lesson plans, resource loan kits and workshops.
The Forest Preserves also provides Programs, including the Nature Express Bus, to give students experiences they will never forget.
Contact one of our nature centers or experience.nature@cookcountyil.gov for more information or to discuss programs tailored to your learning objectives.

History
Established in 1932, Trailside Museum served as the first public nature education facility for the Forest Preserves.
Trailside Museum of Natural History is set within a historic 1876 mansion. The building has served many purposes through the years including being a residence and even housing two schools. In 1919, the Forest Preserves purchased the building, having already bought much of the surrounding land. The mansion served as the Forest Preserves’ headquarters until 1932, when the Board of Commissioners voted to make it a “trail side” museum displaying “every plant and animal in Cook County, live or mounted, for the education of the public.”
Events
Events
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Sonidos Sagrados: Una Exhibición de Instrumentos Aztecas
FeaturedTrailside Museum of Natural History • River Forest, IL 60305Explora los sagrados instrumentos aztecas en exhibición del 15 al 27 de septiembre, descubriendo los sonidos, la historia y el significado cultural de la herencia […]
Free -
Harvest Moon Evening Walk
Trailside Museum of Natural History • River Forest, IL 60305Celebrate the September harvest moon with a peaceful walk through the woods as twilight descends. Ages 18 & up.
Free • Registration Required -
Ritmos Sagrados: Danza y Herencia Azteca
FeaturedTrailside Museum of Natural History • River Forest, IL 60305Un evento cultural sobre la danza tradicional azteca, destacando instrumentos sagrados, ritmos ancestrales, expresión espiritual y la rica herencia indígena mexicana. English Translation Sacred Rhythms: […]
Free -
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Halloween Hoot and Howl
FeaturedKeystone Park • River Forest, IL 60305Spooky family fun featuring live music, pumpkin painting and more. Presented with the River Forest Park District and River Forest Public Library.
Free -
Animal Enrichment Studio
Trailside Museum of Natural History • River Forest, IL 60305Learn about animal behavior while crafting enrichment items ambassador animals! Ages 10 & up.
Free • Registration Required -
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Forest Therapy Walk
Thatcher Woods Pavilion • River Forest, IL 60305Enjoy a mindful meditation and guided forest therapy walk. Led by University of Illinois Extension volunteers.
Free • Registration Required -
Senior Fitness Walk
Thatcher Woods Pavilion • River Forest, IL 60305Moderately paced, 1-mile fitness walk. Led by University of Illinois Extension volunteer. Ages 55 & up.
Free • Registration Required -
“Bone” Appetit
Trailside Museum of Natural History • River Forest, IL 60305Join us during feeding time to learn about Trailside’s ambassador animals.
Free -
Sacred Wanderings in Thatcher Woods
Thatcher Woods Pavilion • River Forest, IL 60305Join Unity Temple of Oak Park as we practice connecting with nature. People with physical challenges are easily accommodated. For info, email mindful@unitytemple.org.
Free -
Weaving with Weeds: Cattail Mat
Trailside Museum of Natural History • River Forest, IL 60305Learn about the history of basketry/weaving techniques and create a small project with a common invasive plant. Ages 18 & up.
Free • Registration Required -
Ofrendas Sagradas: Una Ofrenda del Día de Muertos
FeaturedTrailside Museum of Natural History • River Forest, IL 60305Visita nuestra ofrenda tradicional en exhibición del 12 de octubre al 2 de noviembre, honrando a los ancestros a través de ofrendas, símbolos y la […]
Free -
Entre Mundos: Una Celebración del Día de Muertos
FeaturedTrailside Museum of Natural History • River Forest, IL 60305Conmemora el Día de Muertos con danzantes aztecas, explorando el significado de los altares, las tradiciones espirituales y la profunda importancia de honrar a los […]
Free -
Nature Thursdays ‘Skeletons from Trailside’s Collections’ Drop-In
Trailside Museum of Natural History • River Forest, IL 60305Connect to nature through fun themed activities for all ages. Led by University of Illinois Extension Master Naturalists.
Free -
Nature Book Club: “Backyard Bird Chronicles”
Forest Park Public Library • Forest Park, IL 60130Join a lively book discussion about “Backyard Bird Chronicles” by Amy Tan.
Free • Registration Required -
Seed Collecting at Wolf Road Prairie
Wolf Road Prairie • Cook County, IL 60154 (near Westchester)Join us for a prairie seed collecting workday and learn about history of remnant prairie. Ages 8 & up. Ages 15 & under w/ adult.
Free • Registration Required -
Restoration Workday
Trailside Museum of Natural History • River Forest, IL 60305Restore habitat and control invasive species. Equipment provided. Ages 8 & up. Ages 15 & under w/ adult.
Free • Registration Required -
Senior Fitness Walk
Thatcher Woods Pavilion • River Forest, IL 60305Moderately paced, 1-mile fitness walk. Led by University of Illinois Extension volunteer. Ages 55 & up.
Free • Registration Required -
Costumed Scavenger Hunt Walk
Trailside Museum of Natural History • River Forest, IL 60305Wear your costume while walking through our autumn woods while finding hidden (nut-free) treats.
Free • Registration Required -
Night at the Museum
Trailside Museum of Natural History • River Forest, IL 60305Step into the shadows for eerie animal encounters, exploration of the 1876 mansion, live musical performances, and the strange wonders lurking in the night woods. […]
Free • Registration Required -
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Nation of Nations
Trailside Museum of Natural History • River Forest, IL 60305In celebration of Native American Heritage Month, Trailside is hosting an exhibit celebrating tribal diversity of contemporary Indigenous Communities whose ancestral homelands are the Great […]
Free -
Senior Fitness Walk
Thatcher Woods Pavilion • River Forest, IL 60305Moderately paced, 1-mile fitness walk. Led by University of Illinois Extension volunteer. Ages 55 & up.
Free • Registration Required -
Nature Story Trail “Giving Thanks” by Chief Jake Swamp
Trailside Museum of Natural History • River Forest, IL 60305Walk a short trail while reading a story.
Free -
Sacred Wanderings in Thatcher Woods
Thatcher Woods Pavilion • River Forest, IL 60305Join Unity Temple of Oak Park as we practice connecting with nature. People with physical challenges are easily accommodated. For info, email mindful@unitytemple.org.
Free
Volunteer Opportunities
Help out at events, restore natural areas and more.
Rules
- Pets are not permitted on Nature Center grounds, including the parking lots.
- Nature Centers are unable to accept injured, orphaned or abandoned wildlife.
- For your safety and for the protection of natural areas, please stay on marked trails. Trails are for hiking only.
- Bicycles are only allowed in Nature Center parking lots, or at provided bike racks.
- For the benefit of other visitors and wildlife, please maintain respectful noise levels at all times.
- Picnicking is not permitted on Nature Center grounds. An adjacent picnic grove can be opened for pre-registered groups on weekdays.
- Food or drink is not permitted in Nature Center buildings.
- With the exception of water or sports bottles, food and drink are not permitted on Nature Center trails. Please dispose of litter in proper receptacles.
- Collecting of any kind is prohibited, as is the use of metal detectors. The fine for picking wildflowers is $500.
- For the protection of animals and visitors alike, please do not feed the wildlife.
- Be mindful of closing times for trails, the Nature Center building and parking lot.
- Please report safety hazards or suspicious activities to the Nature Center staff.
- Cross-country skiing is not permitted on Nature Center trails.
- All-terrain wheelchairs are available on a first-come, first-served basis. If you plan to use multiple chairs or need special accommodations for a specific event, we request a minimum of 72 hours’ notice to ensure availability.











