Floating cities and islands in fiction

The flying island of Laputa from Gulliver's Travels. (Illustrated 1795.)

In science fiction and fantasy, floating cities and islands are a common trope, ranging from cities and islands that float on water to ones that float in the atmosphere of a planet by purported scientific technologies or by magical means. While very large floating structures have been constructed or proposed in real life, aerial cities and islands remain in the realm of fiction.