Water wall Love this. Also like the idea of something that is changeable.more flexible. But using wood is appealing and the water stays against the "wall" so it has the thrill of movement w/o getting children very wet. That's appealing.
Water playground in Frasdorf, Germany, by Richter Spielgeräte. Hand pumped water flows through multiple lock gates of various designs; some lift, others rotate, some are hinged. And in the background are some rather nifty spring riders (the things that look like tyres). Pinned by Alec of http://childsplaymusic.com.au/