Navigation device, digital map display system, digital map displaying method in navigation device, and program

There is provided a navigation device comprising registration means for registering an index designated by a user's operation and data of a spot coordinate in association with each other, and display means for displaying a plurality of registered indexes as a list, the display means displaying, together with the list, a digital map of a spot coordinate corresponding to an active index selected from the indexes. A digital map display system and a digital map displaying method are also provided.