The Dragon Fractal
The Dragon fractal is a fractal obtained by (ideally) folding a piece of paper in half in the same direction for a number of times. The figure is obtained by unfolding every fold at 90°. I was obsessed with this picture since I saw it at the beginning of the chapters in Jurassic Park. Twenty years later I searched for it in the Internet and found the explanation.
┌┐ └┘└┐ ┘