Is Chillon the world's most romantic castle? Literary heavy hitters thought so. Genevan philosopher Rousseau started the trend by setting a novel's pivotal scenes below its walls. Flaubert, Goethe, Dickens, Wordsworth and Hemingway enthused over its charms and alpine views. Now Chillon Castle appears on Swiss calendars, a turreted medieval stereotype on a blue lake backed by snowy mountains.