Navigation apparatuses, methods, and programs set a first reference point on a driving route, set a second reference point on the driving route, the second reference point being prior to the first reference point along the driving route, and set a third reference point on the driving route, the third reference point being after the first reference point along the driving route. The apparatuses, methods, and programs set a triangular area having vertices corresponding to the first reference point, the second reference point, and the third reference point and obtain three-dimensional map data around the triangular area. The apparatuses, methods, and programs set a predetermined translucent ratio for a structure included in the triangular area. The apparatuses, methods, and programs generate a moving three-dimensional image which displays the driving route overlapped with the structure set with the predetermined translucent ratio and display the generated three-dimensional motion-image.