Only in Berkeley would you find a park like this... everything is hand made and the kids are encouraged (with supervision) to build with hammers, nails, saws and to paint wherever they want. It is a huge area with 3-story forts, slides and a zip line. A little high maintenance but they kids really enjoyed it.
Alex on the zip line.
Notice the upscale playground structure in the background.
Practicing with the saw and hammer- thankfully without any injuries!