As I said before, when my child was younger we searched out interesting playgrounds. I am a big fan of the all-inclusive playgrounds here in the Bay Area. There is usually a lot of thought that goes into the design of these playing areas. One of these all-ability playgrounds is the Rotary PlayGarden in San Jose. A fun place to climb, swing, ride, and run around. 
When you enter the PlayGarden the theme is clear, you are ‘swimming’ in an imagined river with fishes. The beige and blue foam ground reflects the beach and water features remarkably well. Fishes are objects to touch everywhere.
The Rotary PlayGarden is part of the Guadalupe Gardens, a collection of ‘gardens’ that also include the Heritage Rose Garden, the historic orchard, and the community gardens. Adjacent to the Guadalupe River Park Conservancy Visitor & Education Center, it has ample parking in front.
As the playground is gated you have to adhere to the opening hours, which are Thursday through Sunday from 10:00 am to 6:30 pm. 
Where do you go and play?
Other all-ability playgrounds are the Magical Bridge playgrounds and Walnut Creek near Heather’s Farm.