Radostowo was formerly part of the German Empire. In the German Empire, the place was called Freudenberg.
The place is now called Radostowo and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Freudenberg | German Empire | Rößel | 1939 |
| Radostowo | Under Polish administration | Reszel | 1945 |
| Radostowo | Poland | Olsztyn | 1992 |