We always try to answer questions about the Old Observatory as good as possible. Choose from the dropdown menu below where you have a question about.
I have a question about ...
Then you can best contact the tour coordinator at firstname.lastname@example.org
Then you can best contact the Service Desk of the Kamerlingh Onnes Gebouw.
For all other questions you can contact the Old Observatory coordinator Naor Scheinowitz, via email@example.com
For very general questions you can also call +31 71 527 1891 on Wednesdays, Saturdays and Sundays between 11:00 and 16:00. On other days you can call +31 71 527 5737 during working hours.
The adress of the main entrance of the Old Observatory is:
2311 GP Leiden
Access to the visitors' centre is granted by the Hortus Botanicus, which is at the address:
2311 GJ Leiden
We strongly recommend travelling to the Old Observatory by public transport. If you want to visit by car, these are the possibilites:
There are some parking spaces on the Sterrenwachtlaan, but these are reserved for residents of the street. These cannot be used by visitors of the Old Observatory. There are a number of parking lots available in Leiden. For their locations, you can look at the website of the Leiden municipality.