Adventure Playgrounds are unique parks where kids feel free and are encouraged to play, create, get dirty, and to get to know themselves!! I only know of a few in all of California, so please share with us if you know of any others!

Berkeley Marina Adventure Playground
Summer Hours:
Monday - Friday 9:00 AM - 5 PM
Saturday and Sunday 11:00 AM - 5:00 PM
Location:
160 University Ave, Berkeley, CA 94710
The Adventure Playground is FREE to the general public.
Children under 7 years must be accompanied by a supervising adult at all times.

SCV Adventure Play Eureka Villa
It is currently open to the public on Wednesdays and Fridays 1:00 PM - 4:00 PM.
Location:
28710 Madison St, Val Verde, CA 91384
Eureka Villa is home to an afternoon homeschool enrichment program and summer camps.