Han Wavel

Han Wavel is a world which consists largely of fabulous ultraluxury hotels and casinos, all of which have been formed by the natural erosion of wind and rain. The chances of this happening are more or less one to infinity against. Little is known of how this came about because none of the geophysicists, probability statisticians, meteoranalysts or bizzarrologists who are so keen to research it can afford to stay there.

Douglas Adams, "Life, the Universe and Everything"

See the Dodeca course