Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. recreation structures
9. amusement rides

Anotations

Scope note:

Amusement devices consisting of a large power-driven wheel made in two parallel sections having seats suspended between them, the seats maintaining a horizontal position while the wheel rotates in a vertical plane. The first wheel was created by Pittsburgh, Pennsylvania bridge builder George W. Ferris for the 1893 Chicago World's Fair.