This motionless dragon Illusion looks like it's turning it's head to look at you

You can't hide from this dragon. Despite being completely motionless, the dragon illusion looks like it's turning its head as you walk around it.

At first, I thought this video was fibbing to me. I couldn't grasp how this illusion worked until the bizarre moment when the video reveals the true shape of the dragon cut-out.

This dragon appears to turn its head and look at you, but is actually motionless! Filmed at the Franklin Institute, Philadelphia

This nearly broke my brain!