What are some of the world's best treasure hunts?

After over three decades of relentless searching, the Golden Owl was finally found on October 3, 2024. This €150,000 treasure was hidden back in 1993 by writer Régis Hauser, who took on the pseudonym Max Valentin to publish ‘Sur la trace de la chouette d'or’ ("On the Trail of the Golden Owl"). The book has 11 riddles, each one a clue to the owl’s secret location, setting off what would become the longest-running treasure hunt ever organised. More than 200,000 …