If you like unsafe playgrounds check out this place in Berkeley https://en.wikipedia.org/wiki/Adventure_Playground_(Berkeley) https://en.wikipedia.org/wiki/Adve

If you like unsafe playgrounds check out this place in Berkeley https://en.wikipedia.org/wiki/Adventure_Playground_(Berkeley) https://en.wikipedia.org/wiki/Adventure_Playground_(Berkeley... Almost stepped on nails a few times. Only took my kids once. Felt a little too unsafe.