Alpen was formerly part of the German Empire. In the German Empire, the place was called Alpen.
The place is now called Planina pod Golico and belongs to Slovenia.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Alpen | Austro-Hungary | Radmannsdorf/Radovljica | before the Treaty of Saint-Germain |
| Planina | Austro-Hungary | Radmannsdorf/Radovljica | before the Treaty of Saint-Germain |
| Sveti Križ-Planina | Yugoslavia | Radovljica | after the Treaty of Saint-Germain |
| Alpen | German Empire | Radmannsdorf | 1941 |
| Planina pod Golico | Yugoslavia | Kranj | 1945 |
| Planina pod Golico | Yugoslavia | Socialistična rep. Slovenija | 1992 |
| Planina pod Golico | Slovenia | Slowenien | 1991 |