What architectural style is the Seattle Space Needle an example of?

The Seattle Space Needle is an example of Googie architecture.

Completed for the 1962 Seattle World’s Fair, the Space Needle expressed the era’s fascination with the Space Age, jet travel, atomic energy, and futuristic technology. Its hovering saucer-like observation deck, slender legs, and sweeping structural forms give it the playful, gravity-defying appearance associated with Googie design.

The tower was conceived by Edward E. Carlson and developed architecturally by John Graham Jr. Its design was influenced by the fair’s futuristic theme and by the visual language of mid-century American architecture. Googie buildings commonly feature bold angles, expressive curves, cantilevers, glass, steel, and shapes suggesting speed or motion.

“Futurist” can describe the Space Needle in a broad sense, but Googie is the more precise architectural-style answer. It is also not Art Deco or Streamline Moderne, though Googie inherited some aerodynamic ideas from earlier styles, especially Streamline Moderne. The landmark stands 605 feet tall and was once the tallest structure west of the Mississippi River.