# XXI LO in Warsaw, main building
**Wikidata**: [Q33526853](https://www.wikidata.org/wiki/Q33526853)  
**Source**: https://4ort.xyz/entity/xxi-lo-in-warsaw-main-building


## References

1. [Source](http://tools.wmflabs.org/heritage/api/api.php?action=search&srcountry=pl&srid=625419&format=html)
2. [Source](http://tools.wmflabs.org/heritage/api/api.php?action=search&srcountry=pl&srid=625422&format=html)
3. Narodowy Instytut Dziedzictwa database