# Heliometer building, Old Observatory, Leiden

> domed tower on the grounds of the Old Observatory in Leiden

**Wikidata**: [Q17339471](https://www.wikidata.org/wiki/Q17339471)  
**Source**: https://4ort.xyz/entity/heliometer-building-old-observatory-leiden


## References

1. [Source](https://www.dbnl.org/tekst/sten009monu10_01/sten009monu10_01_0084.php)
2. Dutch National Monument List