* Mythology: Riddles are often found in myths and legends. For example, the Greek myth of the Sphinx tells of a creature who would ask travelers a riddle and devour them if they could not answer it.
* Folklore: Riddles are a common form of folklore. They are often passed down orally from generation to generation.
* Children's games: Riddles are often used as a form of entertainment for children. They can be found in children's books, magazines, and games.
* Puzzles: Riddles can also be found in puzzles and brain teasers.