Wonderball
Incredibly, the ball in the middle of this fountain rotates. There is no way the water has enough force to do this. Either the fountain was designed by Uri Geller, or there is some hidden mechanism causing it to move.
Update: No cheating, no Uri Geller — the 4 ton granite ball rotates by the force of the water alone. The fountain was created by Christian Tobin (Mayer) in 1985.
