July 9th Pop-Up FreeRange Playground

Square on 21st, 1299 21st St, Denver, CO 80205

Thank you for coming!

Thank you to everyone that came out to our pop-up adventure playground at the Square on 21st. We had 15 children engaging in child-led free play with fort building and destruction, interesting tape structures, and multi-age collaboration.

Thank you also to Tracy Larson for capturing the day. Scroll down to see some selected photos, or view the entire album on Flickr.




Materials List

  • PVC Pipes
  • Cardboard Boxes
  • Tires
  • Cardboard Tubes
  • Plastic Crates
  • Fabric
  • Burlap Sacks
  • Bike Tubes and Tires
  • Bike Wheels
  • Yarn
  • Computer Parts
  • Foam Pieces
  • Zip Ties
  • And much more!

THE Rule

Have the best time you can while you are here, and try not to hurt yourself or anyone else.

Count Down








Event Details

Heading to the Rockies game against the White Sox? Or heading downtown for an afternoon out with your kids? Stop by our mini pop-up adventure playground at the Square on 21st between Larimer and Lawrence Streets in downtown Denver from 10:00am – 1:00pm with your children aged 5 – 12.

We’ll have a play area for supervised, child-led, parent-free play with repurposed and recycled materials for 5 – 12 year olds. As a parent, you know your children and their comfort level. If you decide that your children need more support and want to stay with a parent, they will need to engage in other activities onsite. FreeRange Playground will remain parent-free.

Please park on nearby streets – meters are free on Sundays – or walk, bike or take transit. You are also welcome to park in nearby parking lots, but note that it is a Rockies game day so special event pricing may be in effect. Click here for more details about the Square on 21st.


For the Parents

Parents must check-in at the registration table before children can enter the space. By signing your child in, you will be agreeing to our liability waiver, and our photo/video release. We will have a first aid kit onsite should any scrapes or bruises occur.

Parents must remain on-site for the duration of their child’s play, but are free to visit nearby vendors and activities. If we reach playground capacity, we will set up a rolling wait list to allow as many children to play as possible.

Thank you to Boyer’s Coffee for donating a Boulder Organic Coffee station. Unfortunately, there are no bathroom facilities at the Square on 21st, so plan accordingly.

Square on 21st

Get Involved

If you are interested in volunteering as a Play Worker, sign up online. If you want to help us source materials for future events, or just want to get involved to help us bring a permanent FreeRange Playground to Denver, contact us!