More than 100,000 parts went into Ferris’ wheel, notably an 89,320-pound axle that had to be hoisted onto two towers 140 feet in the air. Launched on June 21, 1893, it was a glorious success.

Wheel and axle mechanisms can be used in other ways as well, like in this windmill, this Ferris wheel and this rollercoaster. When you’re walking around, why not try and spot as many different ...

After more than 20 years, the iconic Ferris wheel in Odaiba, Tokyo Bay’s popular commercial district, will cease operations on Aug. 31. But the massive Ferris wheel, one of the largest ever ...