A Ferris wheel (also called a big wheel, observation wheel, or giant wheel) is an amusement ride typiclally consisting of a rotating upright wheel with multiple passenger-carrying components (usually as passenger cars, cabins, tubs, capsules, gondolas, or pods) attached to the rim in such a way that as the wheel turns, they are kept upright, usually by gravity.
Here are some world's coolest amusement park ridess below:
The first Ferris Wheel erected in Chicago in 1893 designed and constructed by George Washington Gale Ferris Jr. as a landmark for the 1893 World's Columbian Exposition in Chicago. And the tallest theme park rides in USA is the 167.6-metre (550 ft) High Roller in Las Vegas which opened to the public in March 2014.
Another famous ferris wheel is the huge success of the 135-metre (443 ft) in 2000 in London and it is named "London Eye" . Since 2000 giant Ferris wheels have been proposed for many other cities, however a large number of these projects have stalled or failed.
Observation wheel is an alternative name of ferris wheel. In Feb. 11th, 2008, the 165 m (541 ft) Singapore Flyer has cylindrical externally mounted motorised capsules, while it was also credited as "world's largest Ferris wheel" by the media when it opened in 2008.