A Double Rainbow
In 2014 when I visited Toronto, Canada for a work meeting, my then manager took a whole day off to take me to see the Niagra falls. It was a chilly but sunny day, wonderful weather for photography. I caught a beautiful double rainbow on the Canadian side of the falls - notice how the sequence of colors invert themselves between the two rainbows.
A noisy Ring-billed gull also made an appearance on the parapet wall next to me.
It turns out that my timing was perfect. Barely a few days I returned, North America was hit by a massive snow-storm that buried the places I had walked around casually under many feet of snow!