France
Every logged mystery in this country.
- Haute-Loire
Beast of Gévaudan
Between 1764 and 1767, a wolf-like animal killed close to a hundred people across the rural Margeride mountains, provoked a royal hunting campaign under Louis XV, and left behind a small pilgrim town so thoroughly built around the legend that you can walk the actual attack territory on marked trails today.
- Brittany
Brocéliande Forest
The enchanted forest of Arthurian romance, identified with the forest of Paimpont in Brittany since the thirteenth century. Its best-known monument is a gilded tree raised in 1991 to mark a fire.
- Normandy
Château de Gisors
In March 1946, the castle's gardener walked into the town hall at Gisors and reported what he said he had found after years of digging under the castle mound at night: a stone chapel underground, sarcophagi along its walls, and 30 metal chests stacked in the nave in columns of 10. His tunnel was filled in. France's culture minister sent official excavators in the 1960s and they found nothing at all.
- Île-de-France
Louvre Crown Jewels Robbery
At 9:34am on October 19, 2025, two men in yellow vests forced the balcony window of the Galerie d'Apollon at the Louvre, cut into two display cases with angle grinders, and left 4 minutes later with eight pieces of the French crown jewels. A ninth object, Empress Eugénie's crown, was left on the escape route and recovered damaged. The museum's curator put the loss at 88 million euros, and the eight pieces had not been reported found as of October 2026.
- Occitanie
Rennes-le-Château
On November 5, 1910, an ecclesiastical court sentenced Bérenger Saunière for trafficking in masses. He had taken money for more masses than he could possibly say. That is the documented answer to where his money came from, and it has never displaced the treasure story.
- Brittany (Ille-et-Vilaine)
Rochers sculptés de Rothéneuf
From late 1894 to 1907, a priest named Adolphe Julien Fouéré, known as the Abbé Fouré, carved more than 300 figures into the granite cliffs at Rothéneuf, east of Saint-Malo: Breton saints, Jacques Cartier, the Boer president Paul Kruger, and sea monsters. The Saint-Malo tourist office says the figures tell the legend of the Rothéneuf family, "corsairs and pirates until the Revolution." The association that studies his work points to his newspapers and his guest book instead, and to a carving called the Rothéneuf Family with the abbé himself, crowned, at its center. A state inspection in 2009 called the site's condition alarming.