Yes I love the spinning ball
Many, many years ago with Bob we were somewhere at an art gallery type of store and they had large, expensive fountains made out of marble and river rock and they had one with a large marble ball on top, spinning. It must have been 2' across and it was undoubtedly HUGELY heavy but it spun quite easily on the water. I was fascinated by it, but I imagine the price was in the thousands of dollars.
Then when we were down in the Bahamas visiting the Atlantis hotel (which I love love love but could never afford to stay at) they had four fountains just like that, and I sat and watched them for a really long time. I was just fascinated by them.
Shoot the only photo I have of it is sideways. You'll have to tilt your head -
I adored Atlantis from the first commercials I saw for it, and then I saw a travel channel special on it. It is featured in several movies - notably After the Sunset with Pierce Brosnan.
The hotel has all sorts of cool very-large aquarium tanks (as in a super long one that divers swim through with gigantic manta rays) and fish-filled lakes.