Putting ordinary canal locks everywhere to shame, the Falkirk Wheel is a rotating boat lift in Falkirk, Scotland, & is a rather facinating example of Archimedes’ principle. More large-scale public works projects should be constructed with as much artistic vision as the Falkirk Wheel.
“…Despite its enormous mass, it rotates through 180° in less than four minutes while using very little power. It takes just 22.5 kilowatts (kW) to power the electric motors, which consume just 1.5 kilowatt-hours (kWh) of energy in four minutes, roughly the same as boiling eight kettles of water. The wheel is the only rotating boat lift of its kind in the world, and is regarded as an engineering landmark for Scotland.”
The Falkirk Wheel is constructed in the shape of a Celtic-inspired double-headed axe, & uses a planetary gear system to keep the 80,000 gallon caissons level.
Strépy-Thieu boat lift » .. another neat boat lift in Belgium, the tallest in the world.