# Fort Frederick William
**Wikidata**: [Q30223894](https://www.wikidata.org/wiki/Q30223894)  
**Source**: https://4ort.xyz/entity/fort-frederick-william


## References

1. [Source](http://tools.wmflabs.org/heritage/api/api.php?action=search&srcountry=pl&srid=610492&format=html)
2. Narodowy Instytut Dziedzictwa database