If the title doesn't excite you then you are dead inside, just stone cold. LISTEN, imagine your neighborhood transformed with ramps, wall climbs, tubes, and slides - interconnecting every building in ways that encourages exercise but also lets you explore your home turf in from new perspectives.
Liber toit, a concept by Aureline Ranson is just that. Although I'm sure there are zoning and safety issues involved to implementing such a system in a public space, I don't see why private properties with sprawling campuses can't embrace the idea.
More pics at Yanko Design.
a hybrid Habitrail / Wet 'n Wild is what i long for.