Villa Diodati, Lake Geneva
Villa Diodati on Lake Geneva is the mansion where Mary Shelley was inspired to write the story of Frankenstein while on vacation. She was in the mansion with Percy Bysshe Shelley, Lord Byron, Claire Clairmont, and John Polidori, Bryon's physician. During the rainy days they were there, they coped with the building tension of being stuck inside by reading, telling, and writing ghost stories. The inspiration for Frankenstein was born here, as well as Polidori's The Vampyre.
Source: Blakemore, Erin. “'Frankenstein' Was Born during a Ghastly Vacation 200 Years Ago.” History.com, A&E Television Networks, 9 Mar. 2018, https://www.history.com/news/frankenstein-true-story-mary-shelley.