Groß Kryszzahnen was formerly part of the German Empire. In the German Empire, the place was called Seckenburg.
The place is now called Zapovednoe and belongs to Russian Federation.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Groß Kryszzahnen | German Empire | Elchniederung | 1914 |
| Seckenburg | German Empire | Elchniederung | 1939 |
| Zekenburg | Under Soviet administration | Kaliningrad | 1945 |
| Zapovednoe | Russian Federation | Slavsk | 1992 |