Scotland’s Falkirk Wheel
This isn’t a gadget—and it’s even a couple of years old—but we think you’ll forgive this weekend foray into “Oh, wow!” engineering. This bit of concrete and steel is the Falkirk Wheel, a boat lift connecting two canals near Falkirk, Scotland. Thanks to Archimedes’ principle (floating objects displace their own weight), each water-filled caisson weighs…