Some embodiments provide a region-based method for sharing photos between devices. The method establishes an image-sharing event for a particular region, which in some embodiments is defined in terms of one or more geographic attributes (e.g., a latitude, a longitude, and one or more shape attributes that define a shape about the intersection of the latitude and the longitude). The method then allows devices that enter the particular region to join the image-sharing event, so that (1) the devices can capture and add photos for the event, and (2) they can view and save photos captured by other devices that joined the event. To facilitate the sharing of the photos, the method of some embodiments makes the photos that are captured for the event available for viewing for a period of time after the event has ended. This extra time provides the event participants more time to view and save photos captured for the event.