I had to try moving the ball! It rotates with a tiny touch.

The 28 inch diameter, 2000 pound granite sphere floats on a cushion of water pumped up from a fountain below. The socket of the granite base is precision carved to allow an 8/1000th inch thick layer of water that the ball rests on. Even a child can rotate the ball!

This marvelous floating granite ball fountain is in front of the Nature Center at Holliday Park in Indianapolis.