A navigation system includes a processing unit for generating route data relating to a route along which a vehicle has actually traveled, from position data acquired by a position acquiring unit, an image data acquiring section for acquiring image data, a first storage section for storing the image data acquired by the image acquiring unit according to groups of respective destinations, and a second storage section for storing the route data generated by the processing unit. A link data generating section is provided for correlating the respective destinations with the respective route data via link data. An outputting unit is configured to extract a group linked to a destination by the link data in response to a manual designation of a route data stored in the second storage section or to a manual or automatic designation of a designation included in that route data and then to output the image data included in that group from the first storage section to an outputting section.