Ferris wheel

n.

An amusement ride consisting of a large upright rotating wheel having suspended seats that remain in a horizontal position as the wheel revolves.

After George Washington Gale Ferris (1859-1896), American engineer.

Recent large Ferris wheels have been marketed as observation wheels.

carousel

n. American English

Also carrousel.

A revolving circular platform with seats often formed like animals on which people ride, as at an amusement park.

British English: merry-go-round.

Synonym:

roundabout, whirligig, galloper