When architecture firm Haugen/Zohar Arkitekter was commissioned by the municipality of Trondheim, Norway, to build an outdoor project for a kindergarten, the company came up with this ... fireplace?!
Very cool, but not exactly the jungle gym I would've built for the kindergarteners: Link
http://www.youtube.com/watch?v=Fp4Nny_rIiw
A playground would have made way more sense.
Obviously a space like this wouldn't have a fire lit unless there is adult supervision, and when you do light the fire the kids get a chance to learn how to act responsibly around a fire.
We should strive to empower children to do stuff instead of shielding them from everything conceivable. Protecting kids from real threats is different from teaching them how to manage risks.
Max