| Castle of Seda | |
|---|---|
Castelo de Seda | |
| Portalegre, Alto Alentejo, Alentejo in Portugal | |
| Coordinates | 39°11′35.163″N 7°47′13.221″W / 39.19310083°N 7.78700583°W |
| Type | Castle |
| Site information | |
| Owner | Portuguese Republic |
| Open to the public | Public |
| Site history | |
| Materials | Schist, Limestone, Mortar |
The Castle of Seda (Portuguese: Castelo de Seda) is a medieval castle located in the civil parish of Seda, in the municipality of Alter do Chão, in the Portuguese district of Portalegre.