1. A system comprising: a graphical user interface configured to organize and manage the layers of a digitized map, the graphical user interface including: a layer hierarchy including a first layer and a second layer, a first display range defining a first set of map scales at which the first layer is displayed in the digitized map, and a second display range defining a second set of map scales at which the second layer is displayed in the digitized map; and a display device displaying the graphical user interface.