You've probably heard of the city of Chicago. Did you know the first Ferris wheel was built there in 1893? The "Chicago Wheel" was the creation of George Ferris. The idea was to build something to rival the Eiffel Tower. Ferris' wheel was 264 feet tall and had 36 cars. Inside each car were seats for 60 people. A total of 2,160 people could ride the wheel at one time! The "High Roller" in Las Vegas is now the world's tallest Ferris wheel at 550 feet.