In science fiction
, floating cities
are settlements that strictly use buoyancy
to remain in the atmosphere of a planet. However the term generally refers to any city that is flying, hovering, or otherwise suspended in the air via any means technological or even magical.
In Jonathan Swift
's satirical novel Gulliver's Travels
, Swift envisioned Laputa
, an island city that floated in the sky. The island was suggested to levitate above the Earth by use of the force of magnetism
. In the 1920s, Hugo Gernsback
speculated about floating cities of the future, suggesting that 10,000 years hence "the city the size of New York will float several miles above the surface of the earth, where the air is cleaner and purer and free from disease carrying bacteria." To stay in the air, "four gigantic generators will shoot earthward electric rays which by reaction with the earth produce the force to keep the city aloft."
Laputa (although uninhabited) is shown in Hayao Miyazaki
's Castle in the Sky
Although Swift's proposal was intended as satire, Buckminster Fuller
proposed the concept more seriously in the form of the Cloud nine megastructure
, in which he envisioned structural spheres that float freely in the sky, allowing passengers a migratory lifestyle and a solution to the depletion of Earth's resources. He proposed a geodesic sphere
that would be heated by... Read More