Mobile Persistent Augmented-Reality Experiences

In one embodiment, a method includes determining, using one or more location sensors of a computing device, an approximate location of the computing device, identifying a content object located within a threshold distance of the approximate location, wherein an augmented-reality map associates the content object with a stored model of a real-world object and specifies a location of the content object on or relative to the stored model of the real-world object, obtaining an image from a camera of the device, identifying, in the image, a target real-world object that matches the stored model of the real-world object, determining a content object location based on a location of the target real-world object and the location of the content object on or relative to the model of the real-world object, and displaying the content object at the content object location.