| Ruins of Freudenau Castle | |
|---|---|
Ruine Freudenau | |
| Untersiggenthal | |
Ruins of Freudenau | |
| Site information | |
| Type | lowland castle |
| Code | CH-AG |
| Condition | ruin |
| Location | |
| Coordinates | 47°30′44.5″N 8°14′2.5″E / 47.512361°N 8.234028°E |
| Site history | |
| Built | around 1240 |
Freudenau Castle is a ruined fort in the municipality of Untersiggenthal of the Canton of Aargau in Switzerland. It is a Swiss heritage site of national significance.