Only if someone else is the observer of the rainbow. If you are standing at the end of where someone else sees a rainbow, you will see a rainbow in a different place. It's caused by sunlight getting bent as it goes through millions of tiny water droplets in the air. (White light is made up of different colours, and the clever bit is that the different colours each bend slightly different amounts, so when the white light goes through a raindrop it gets split into the colours you see in a rainbow).