Watch This Skyscraper Appear Out of Thin AirBrian Barrett8/23/10 3:40pm107EditInvite manuallyPromoteDismissUndismissHideGo to permalink Now that's a handy magic trick: Observe! This lot, empty but for the world's largest augmented reality marker. Astonish! As a towering skyscraper flickers to life in its place. Wonder! At just how big a camera they must have needed.