Like every autumn, the Old Observatory is open to the public! During this annual open day, the Old Observatory in Leiden will be exploring astronomy in various ways.

This day you can enjoy workshops and demonstrations all day long in the different rooms of the Old Observatory. There will be exciting activities for all age groups, young and old alike: from creative craft corners for the tiniest among us, to in-depth lectures for space enthusiasts. Every room in the building has an astronomical theme and something to experience, from gravity and light to astrophotography and aliens. 

Whether you are young or old, know a lot about the universe or not, there is something for everyone during the Old Observatory festival!


  • Zaterdag 14 oktober 2023