What is at the end of the rainbow?

According to Irish legend, at the end of the rainbow is a leprechaun who gives a pot of gold to the lucky person who finds him. In reality, the end of the rainbow is an unreachable illusion.

A rainbow is created when sunlight reflects off water droplets. It is not an actual physical object that one can touch, but rather an optical illusion that is seen only from a certain angle. As a person tries to approach the end of a rainbow, it appears to move farther away. The colors of the rainbow, in order, are red, orange, yellow, green, blue, indigo and violet.