# Old Naval Observatory

> astronomical observatory

**Wikidata**: [Q1570896](https://www.wikidata.org/wiki/Q1570896)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Old_Naval_Observatory)  
**Source**: https://4ort.xyz/entity/old-naval-observatory


## References

1. archINFORM
2. Freebase Data Dumps. 2013
3. National Register of Historic Places
4. National Archives Catalog
5. GeoNames
6. [Source](https://www.archinform.net/service/wd_aipro.php)