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.

The Field Museum unveils a new exhibit this week about the 1893 Columbian Exposition ... cutting-edge technology and a Ferris wheel that makes Navy Pier’s look pint-sized in comparison.

Photo Provided The BIG wheel, a highlight of the 1892-93 World’s Fair and Exposition held at Chicago, was built by George Washington Gale Ferris ... November 5, 1893. For rates of fare ...