Ferris Wheel

The Ferris Wheel is considered one of the greatest engineering wonders in the world.

The first Ferris Wheel was created by Pittsburgh, Pennsylvania engineer, George W. Ferris, in 1893. The wheel is supported by two 140-foot steel towers and connected by a 45-foot axle — the largest single piece of forged steel ever made at that time.

— Fun and Exciting Facts About Engineering