Hartha was formerly part of the German Empire. In the German Empire, the place was called Hartha.
The place is now called Zacisze and belongs to Poland.
| Historical place name | Country | Administration | Time |
|---|---|---|---|
| Hartha | German Empire | Lauban | 1939 |
| Podgórze | Under Polish administration | Lubań | 1945 |
| Zacisze | Poland | Jelenia Góra | 1992 |