The ferris wheel is a large wheel-shaped mechanical building facility. Hanging on the edge of the wheel is a passenger cabin (Gondola). Passengers sit on the Ferris wheel and turn up slowly, they can overlook the surroundings from a height. The most common occasions where Ferris Wheels exist are amusement parks (or theme parks) and garden games. As a playground mobile game, they are collectively called "Three Paradises of Paradise" with roller coasters and carousels. But the Ferris wheel often exists alone on other occasions, and is usually used as an active viewing platform.