1. A method of computing at least one photogenic route from a starting location to a destination location, comprising; a) computing photogenic values for images in a large collection representing a geographic region that includes the starting location and the destination location; b) computing a photogenic index for each route segment based on computed photogenic values of images taken along the route segment; c) computing at least one photogenic route from the starting location to the destination location and presenting the route(s) to a user.