The Surprising History of Dildos: Humans Have Been Using Them for Over 28,000 Years The oldest dildo could come from the Stone Age The oldest dildo in the world is approximately 28,000 years old. It was discovered in 2005 in Tbingen, Germany by archaeological researchers at the university there. It is eight inches long and " The Surprising History of Dildos: Humans Have Been Using Them for Over 28,000 Years