If travelers happen to visit Departure Hall 3 of Amsterdam’s Schiphol Airport, they may notice an immersive installation of clouds. Titled Beyond, Dutch artist Daan Roosegaard’s latest work is a “cloud wall” that creates the impression of a 3D cloud-laden sky vanishing into a great aerial distance. A beautiful feat of optical illusion, it is 100 meters long and 10 centimeters thick, and comprised of 160 billion pixels.