I wrote about this contraption 17 years ago: <a href="https://www.damninteresting.com/curio/the-falkirk-wheel/" rel="nofollow noreferrer">https://www.damninteresting.com/curio/the-falkirk-wheel/</a>
As with many cool places, Tom Scott has a good video about it, though mostly about balancing buckets of water. <a href="https://youtu.be/qHO9gARac-w" rel="nofollow noreferrer">https://youtu.be/qHO9gARac-w</a>