Unter-Neugrün was formerly part of the German Empire. In the German Empire, the place was called Unter Neugrün.
The place is now called Dolní Nivy and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Unter-Neugrün | Austro-Hungary | Falkenau a. d. Eger | before the Treaty of Saint-Germain |
| Dolní Neugrün | Austro-Hungary | Falkenau a. d. Eger | before the Treaty of Saint-Germain |
| Dolní Nový Grün | Czechoslovakia | Falknov nad Ohří | after the Treaty of Saint-Germain |
| Unter-Neugrün | Czechoslovakia | Falknov nad Ohří | after the Treaty of Saint-Germain |
| Unter Neugrün | German Empire | Falkenau a. d. Eger | 1938 |
| Dolní Nivy | Czechoslovakia | Sokolov nad Ohří | 1945 |
| Dolní Nivy | Czechoslovakia | Sokolov | 1992 |
| Dolní Nivy | Czech Republic | Sokolov | 1993 |