It's so cool because you can only see the painting properly depending on the angle you look at it. When looking at it from a different angle or from above it would be a distorted image. Just think about how hard it would be for an artist to do this.
Dutch artist Leon Keer is known for his impressive street art displays that play with perspective, but he also knows how to attract onlookers -- by choosing a recognizable theme. One of his most recent works seen in the Netherlands paid homage to Pac-Man, the 1980s arcade game.