Adventure Playground

Adventure Playground Mercer Island


Adventure Playground is a one of a kind play area that allows kids to create their own play adventure. Nestled in the wooded forest of Deane's Children's Park, children are provided toolboxes, various building supplies, safety items and the freedom to create build-it-yourself play zones with the guidance of Staff. 


Where: Deane's Children's Park (5500 Island Crest Way, Mercer Island)

Ages: Children under 12 must be with a parent. Children must be 12 years of age to be left unsupervised. Parents are encouraged to stay and play with their children.

Days: Tuesday, Wednesday, Thursday, Sunday*

Date/Time: July 5th through September 25th*, 1pm to 4pm

*playground is only open Sundays in September

Closed: July 10th and September 4th

Required: Closed toed shoes are required. No one will be allowed into Adventure Playground wearing open toed shoes such as sandals.

Fee: By Donation. Adventure Playground is also available for parties or private rentals. Call 206.275.7862.


Building supply donations such as lumber, nails, tools, and rope are always welcome during program months of operation. Please email Katie Herzog to coordinate your donation or drop off supplies during the hours the playground is open.


Download a child participation waiver here. Must be on file, and can be signed once to cover the entire summer. Download Adventure Playground Rules here.

If you are coming to Mercer Island to visit the playground and want to call first to be sure it has not been closed due to inclement weather or any other reason, please call the Community Center at 206.275.7609.



  1. Like JayMarc Homes and MI Parks & Rec on Facebook.
  2. Post photos of your kids tree fort creations. Be creative!
  3. Tag JayMarc Homes in your photo. Please make sure photos are set to PUBLIC or we will not be able to see that we were tagged!

Most creative photo wins. Winner will receive a $200 Toys R Us gift card!

No limit on number of submissions. Winner will be contacted via Facebook. Deadline is the last day of Adventure Playground, September 25th 2016. When entering the competition, you are agreeing to let JayMarc Homes use the photos for social media, promotion and website purposes. Please contact with any questions.



Big thank you to the Mercer Island Parks and Recreation Department for helping put on such a fun Summer event and Uresco Construction Materials for donating lumber! 

JayMarc Homes is proud to be sponsoring Adventure Playground!


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