World's Columbian Exposition: Ferris Wheel, Chicago, United States, 1893., originally uploaded by Brooklyn Museum.
I have yet to ride one. I saved the experience for my husband. A sort of virginity, perhaps you could say. You are looking at the original Ferris Wheel invented by George Washington Gale Ferris, Jr for the Chicago World's Columbian Exposition in an attempt to trump the exquisitly famous design of Gustave Eiffel's tower.
For more info, read Devil in the White City, by Erik Larson. Interesting stuff.