Warta was formerly part of the German Empire. In the German Empire, the place was called Warta.
The place is now called Stráž nad Ohří and belongs to Czech Republic.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Warta | Austro-Hungary | Kaaden | before the Treaty of Saint-Germain |
| Varta | Austro-Hungary | Kaaden | before the Treaty of Saint-Germain |
| Warta | Czechoslovakia | Kadaň | after the Treaty of Saint-Germain |
| Stráž | Czechoslovakia | Kadaň | after the Treaty of Saint-Germain |
| Warta | German Empire | Kaaden | 1938 |
| Stráž | Czechoslovakia | Jáchymov | 1945 |
| Stráž nad Ohří | Czechoslovakia | Karlovy Vary | 1992 |
| Stráž nad Ohří | Czech Republic | Karlovy Vary | 1993 |