A display is divided into two regions, a standard region and an enlarged region with a user positioned is at an angle relative to the display. The standard region is formed on a side nearer the user and the enlarged region is formed on a side farther from the user. When the navigation device displays guidance information, information displayed in the standard region is displayed on a standard scale, while information displayed in the enlarged region is displayed enlarged relative to the standard scale. Since the display on the side farther from the user position is thus enlarged, the user can more easily view that guidance information.