Free things to do this weekend in and around Denver

Denver's Top Picks for FREE family-friendly fun Friday, September 11, 2026 to Sunday, September 13, 2026.

(Scroll down for full, detailed list of free weekend activities.)

• 2026 Colorado Mineral, Fossil, Gem, and Jewelry Show - 4600 North Humboldt Street, Denver, Denver, CO 80216, United States - September 11, 2026 to September 13, 2026, 9 am - 6 pm
• Fourth Annual Dog-Eared Pages Book Drive - YellowDog Design, Print and Marketing - Steele Street, Denver, CO, USA - September 11, 2026 to September 13, 2026, 9:00AM
• Miller Farms Annual Fall Harvest Festival - Miller Farms - County Road 19, Platteville, CO 80651, United States - September 11, 2026 to September 13, 2026, See website
• Music on the Patio at South Suburban Golf Course - South Suburban Golf Course - South Colorado Boulevard, Centennial, CO, USA - September 11, 2026, Fridays, 6-9 pm | Sundays, 3-6 pm
• 2nd Saturday at CSU Spur - CSU Spur - National Western Drive, Denver, CO, USA - September 12, 2026, 10am-2pm
• 2026 Colorado Mineral, Fossil, Gem, and Jewelry Show - 4600 North Humboldt Street, Denver, Denver, CO 80216, United States - September 12, 2026 to September 13, 2026, 9 am - 6 pm
• Centennial Chalk Art Festival - The Streets at SouthGlenn - 6851 S Vine St, Centennial, CO, USA - September 12, 2026, 10 am - 4 pm
• 37th Annual Friendship Powwow and Free Day at the Denver Art Museum - Denver Art Museum - 100 W 14th Ave Pkwy, Denver, CO 80204, United States - September 12, 2026, 10am - 5pm
• Fourth Annual Dog-Eared Pages Book Drive - YellowDog Design, Print and Marketing - Steele Street, Denver, CO, USA - September 12, 2026 to September 13, 2026, 9:00AM
• Maker Mornings: Cyanotypes and Printmaking - Clyfford Still Museum - 1250 Bannock St, Denver, CO 80204, United States - September 12, 2026, 10:30 a.m. - 12:30 p.m.
• Lincoln/Broadway "End of Summer" Festival - 47 Lincoln Street, Denver, CO, USA - September 12, 2026, 11am-5pm
• The Park Hill Fall Arts Fest - Park Hill Masonic Lodge - September 12, 2026 to September 13, 2026, 10 am - 5 pm
• Taste of Ethiopia Festival 2026 - Denver City Park Pavilion - Steele Street, Denver, CO, USA - September 12, 2026 to September 13, 2026, See website
• Western Fest - Highlands Ranch Metro District - 62 Plaza Drive, Highlands Ranch, CO 80129, United States - September 12, 2026, 10 AM-2 PM
• Marine Biologist for a Day - Downtown Aquarium - Water Street, Denver, CO, USA - September 12, 2026, 9am - 2pm
• Wildlife Rescue - An Augmented Reality Experience - Gaylord Rockies Resort & Convention Center - North Gaylord Rockies Boulevard, Aurora, CO, USA - September 12, 2026 to September 13, 2026, At Your Leisure
• Concerts at the Green with Wheat Ridge Parks and Recreation - 7101 W 38th Ave, Wheat Ridge, Colorado, United States - September 13, 2026, See website
• Mythical Storytime with Fantasy Friends - Audacious Immersive - The Audacious Space, 1373 N Grant St. Denver, CO 80203 - September 13, 2026, 1:00pm
• Produce in the Parking Lot - Mercado en el Estacionamiento - Longmont YMCA - Lashley Street, Longmont, CO, USA - September 13, 2026, 1 pm - 2 pm
• Taste of Ethiopia Festival 2026 - Denver City Park Pavilion - Steele Street, Denver, CO, USA - September 13, 2026, See website
• Wildlife Rescue - An Augmented Reality Experience - Gaylord Rockies Resort & Convention Center - North Gaylord Rockies Boulevard, Aurora, CO, USA - September 13, 2026, At Your Leisure