| Key | Value |
| access | yes |
| addr:city | Freienstein |
| addr:country | CH |
| addr:housenumber | 1 |
| addr:postcode | 8427 |
| addr:street | Zur Burg |
| alt_name | Burg Alten-Teufen |
| building | yes |
| castle_type | defensive |
| historic | castle |
| historic:civilization | medieval |
| ruins | yes |
| wikidata | Q2175266 |
| wikipedia | de:Ruine Freienstein |