<human>:  How old is the myth of the Fountain of Youth?
<bot>: The Fountain of Youth is a myth that dates back to the 16th century. It is a story about a magical spring that can make you young again. The story is based on a legend that was told by the Spanish explorer Juan Ponce de Leon. He claimed to have found the fountain in Florida, which was said to have the power to make people young again.