The higher your vantage point, the more likely you’ll see more of the rainbow’s circle. Chen Hui/VCG via Getty Images The legend goes that there is a pot of gold hidden at the end of every rainbow.

Rainbow clouds are rare, but summer is the best time to spot them, and no, there's no pot of gold. These clouds that look like rainbows aren't very common, but chances are you've seen one or two in ...