Place names
From World Wind Wiki
Place names are specific points that are assigned text labels, such as cities, hills and buildings.
Although World Wind comes with over 200 MiB of places names, not all place names are covered. It is possible, however, to add more place names to World Wind, both to Earth and other worlds, through add-ons.
World Wind uses public databases for place name data. Sometimes these databases contain place name errors which are then carried over to World Wind.
Place name add-ons
There are add-ons that include place names.
Creating place name add-ons
Place name databases
There are sites that provide databases of place names. If the copyright allows, these can be converted for use in World Wind.