Register of Geographical Names is a basic national spatial layer. It includes geographical names of spatial features, which have some historical, ethnically or social important identity (these features are more or less permanent). The register includes names of populated places, names of hydrography features, names of relief features and names of areas. The sources are topographical maps at a scale of 1 : 5.000 and 1 : 10.000, 1 : 25.000, 1 : 250.000 and 1 : 1.000.000. Register of Geographical Names is a basic spatial layer used for georeferencing of different spatial features, for linking of other spatial layers with geographical names, for different topographical and cartographical applications, for statistical and linguistic analysis.