The present invention provides a car navigation system and a car navigation device that can easily set a destination without complicated operation. The navigation device can load a memory card that records multiple image files taken by an image taking device with GPS function. All thumbnail image data in the header of the image file, which is recorded in the memory card loaded in the navigation device, is read to display a list of thumbnail images represented by the thumbnail image data. If any of the displayed thumbnail images is selected according to the operation of the cross key, GPS data corresponding to the selected thumbnail image is read to display a position represented by GPS data.