Bridge

Bridge by Michael Cross sounds like a neat experience:

[Bridge…] is a series of steps that rise out of water as you walk across them, as if walking on water. On entering the exhibition the visitor is met by an empty expanse of water with one step at it’s edge, stepping onto it pushes it down a little and this force raises the next. In this manner the visitor can walk out into the middle of the water with only ever one step in front of him and one behind.

Also a thoroughly immersive experience, should you put a foot wrong. (Though in truth there’s no mention of how deep the water is; it’s unclear whether a visitor with a poor sense of balance would end up ankle deep or in over their head.)

[Via spurgeonblog, via kottke.org remaindered links]