Grün was formerly part of the German Empire. In the German Empire, the place was called Grün.
The place is now called Louka and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Grün | Austro-Hungary | Tepl | before the Treaty of Saint-Germain |
| Grün | Czechoslovakia | Teplá | after the Treaty of Saint-Germain |
| Grün | German Empire | Tepl | 1938 |
| Louka | Czechoslovakia | Mariánské Lázně | 1945 |
| Louka | Czechoslovakia | Sokolov | 1992 |
| Louka | Czech Republic | Sokolov | 1993 |