Wonder of ScienceTimelapse of the Falkirk Wheel in action; the only rotating boat lift of its kind in the world.
Video Credit: David Iliff / CC BY-SA 3.0
Further reading: https://en.wikipedia.org/wiki/Falkirk_Wheel
Kevin Karhan 
@wonderofscience Yeah, that thing is cool as it's essentially doing a "load swap"...
https://www.youtube.com/watch?v=qHO9gARac-w video via @tomscott
