One of the memorable exhibits at the 21st Century Museum of Contemporary Art, Kanazawa is the inverse pool, which creates the illusion of people being underwater.
There's something creepy, almost disturbing, about the effect. But then that's one of the things good art does—it makes you ask yourself why you react the way you do.
The brainchild of Argentinian artist Leandro Erlich, the pool also ranks Number 3 on Oobject's list of really cool pools.
What it looks like inside the pool ...
... and what it looks like from above.