History A Of Six Weeks' Tour through a part of France, Switzerland, Germany, and Holland; with Letters Descriptive of a Sail Round the Lake of Geneva and of the Glaciers of Chamouni is a travel narrative, that Mary Shelley has published in 1817. It describes two journeys that Shelley undertook with Percy Bysshe Shelley and her stepsister Claire. The first journey led them all across Europe in 1814, the second one to the Lake Geneva two years later.