Department of Space Exploration
Do you know about Saturn's hexagon? Of course you do...but if not: SATURN HAS A NATURAL HEXAGON AT ITS NORTH POLE.
When I first learned this about a decade ago it blew my mind in two ways. First, that I was well into my thirties before I found out about this, (why didn't a teacher show me this? they discovered it in 1981??) and second, that it's just the most alien looking thing in our solar system.
At the center of the hexagon is a MASSIVE vortex. That's a close up shot of it there in the red and green.
Just to help you understand the scale here check out this image of the United States overlaid:
More about the Hexagon here: LINK
-Jake