Whats the origin of the pot of gold at the end of the rainbow?

The origin of the pot of gold at the end of the rainbow is rooted in Irish folklore, where leprechauns, mischievous fairy beings, are said to hide their treasures at the end of a rainbow. The idea symbolizes unattainable wealth and happiness, as rainbows are optical phenomena that have no physical end point. Over time, this imagery has become a popular motif in literature and culture, representing hope and the pursuit of dreams.