One day, Ferdinand Cheval, a French postman, came across a stone at Hauterives near Lyon, and was fascinated by its strange, evocative shape. He spent the next three decades collecting stones, shells, and fossils, and used them to build the Palais idéal.

Cheval’s palace is one of many works of architectural fantasy in this book, the result of over 20 years’ research by celebrated architectural photographer Deidi von Schaewen. Like Cheval, the creators of these extraordinary worlds simply started building, with no rules to guide them and, in most cases, no previous artistic experience. These fantasy palaces, bizarre sanctuaries, and colorful sculpture gardens seldom follow a plan. Often the artists continued building for many years, sometimes until their dying day.