# Porta Nigra

> city gate of Trier

**Wikidata**: [Q152339](https://www.wikidata.org/wiki/Q152339)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Porta_Nigra)  
**Source**: https://4ort.xyz/entity/porta-nigra


## References

1. archINFORM
2. Virtual International Authority File
3. [Source](https://arachne.dainst.org/entity/1304119)
4. Freebase Data Dumps. 2013
5. [Source](http://www.lessentiel.lu/fr/news/grande_region/story/Le-mystere-de-la-Porta-Nigra-a-enfin-ete-devoile-26562373)
6. [Source](https://www.archinform.net/service/wd_aipro.php)
7. museum-digital