Süssenberg was formerly part of the German Empire. In the German Empire, the place was called Süßenberg bei Erlachstein.
The place is now called Sladka Gora and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Süssenberg | Austro-Hungary | Cilli/Celje | before the Treaty of Saint-Germain |
| Sladka Gora | Austro-Hungary | Cilli/Celje | before the Treaty of Saint-Germain |
| Sladka gora | Yugoslavia | Šmarje | after the Treaty of Saint-Germain |
| Süßenberg bei Erlachstein | German Empire | Cilli | 1941 |
| Sladka gora | Yugoslavia | Celje | 1945 |
| Sladka Gora | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Sladka Gora | Slovenia | Slowenien | 1991 |