Thematic guided tour « Mysteries of Chillon » Have you ever been curious to know what is hidden behind the closed doors of the castle? In the company of a guide in costume, learn to read the mysterious patterns and signs engraved on the walls of the fortress, discover the secrets of the underground passages and use a master key to open and observe some areas usually closed to the public. Meeting point : 1st court Dates: Mondays, July 18;…