Kunigelen was formerly part of the German Empire. In the German Empire, the place was called Stroppau.
The place is now called Otradnoe and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Kunigehlen | German Empire | Angerapp | 1938 |
| Stroppau | German Empire | Angerapp | 1939 |
| Kunigelen | Under Soviet administration | Kaliningrad | 1945 |
| Otradnoe | Russian Federation | Ozersk | 1992 |