
Leiden Old Observatory
Explore the world's oldest university observatory, established in 1633, with functional antique telescopes and student-led tours.

Highlights
Must-see attractions
Social
From TikTok & Reddit
Best Time
Access & student guides

Leiden Old Observatory
Best Time
Access & student guides

Highlights
Must-see attractions
Explore the world's oldest university observatory, established in 1633, with functional antique telescopes and student-led tours.
"AMAZING experience! Saw Venus and Mars through historic telescopes."

🎯 Book English Tours Early
English tours can be scarce and may be canceled if not enough attendees. Book well in advance!
🔭 Functional Telescopes!
You might get to operate the historic telescopes. Seeing Venus and Mars is possible!

Quick Facts
Hours
Rating
4.5 · 503 reviews
Type
Museum
Highlights
Discover the most iconic attractions and experiences

Historic Telescopes
Main viewing dome
See and even operate functional, antique telescopes used for astronomical research.

Oldest University Observatory
Exterior and grounds
Marvel at the architecture of the world's oldest extant university observatory, established in 1633.

Student-Led Tours
Various rooms
Gain unique insights from passionate astronomy students during exclusive guided tours.
Plans like a pro.
Thinks like you
Planning Your Visit
Book Tours in Advance
Check Opening Times & Events
Best Times
Insider Tips
from TikTok, Instagram & Reddit
🎯 Book English Tours Early
English tours can be scarce and may be canceled if not enough attendees. Book well in advance!
🔭 Functional Telescopes!
You might get to operate the historic telescopes. Seeing Venus and Mars is possible!
🚶♂️ Admire from Outside
If tours are unavailable or canceled, the building's exterior is still impressive.
💡 Student Guides Shine
Enthusiastic astronomy students lead tours, sharing fascinating history and insights.
Tips
from all over the internet
🎯 Book English Tours Early
English tours can be scarce and may be canceled if not enough attendees. Book well in advance!
🔭 Functional Telescopes!
You might get to operate the historic telescopes. Seeing Venus and Mars is possible!
🚶♂️ Admire from Outside
If tours are unavailable or canceled, the building's exterior is still impressive.
💡 Student Guides Shine
Enthusiastic astronomy students lead tours, sharing fascinating history and insights.
💰 Check Ticket Prices
Tickets are usually around €5, but ensure you're using the correct vendor and information.
What Travellers Say
Reviews Summary
Visitors praise the Leiden Old Observatory for its historical significance and the unique opportunity to interact with antique, functional telescopes. The student-led tours are frequently highlighted as a major positive, offering enthusiastic and knowledgeable insights. However, some visitors have experienced issues with tour cancellations, confusing ticketing information, and outdated vendor details, leading to disappointment.
"One of the most impressive buildings of Leiden. Although the observatory is not used anymore for nowadays research it is still functional. Normally I try to visit when a weekend of science is organized, then there are guided tours with enthusiastic astronomy students."
Helen
"The Oude Sterrewacht is a really cool building, I recently visited with my physics class to see real-life telescopes as we are discussing the chapter regarding astronomy. We were even allowed to rotate and use the telescope as they were still functional, but as we visited early in the morning, there was nothing to see through the telescope. Also, see the videos I've added where you can briefly see how the telescopes would spin. I definitely recommend visiting if there is an opening."
Pocket KOOL
"I ordered a ticket for the english tour and no one showed up. I recommend you save your 5 euro and just take pictures of the outside for free. Ticketing information is confusing and out of date. The vendor for payment is absolutely atrocious."
Shawn Langan
What People Like
What People Dislike
Frequently Asked Questions
🚇 🗺️ Getting There
The Old Observatory is located within Leiden University's central campus. It's easily accessible by public transport, with several bus lines stopping nearby. If arriving by train, it's a pleasant walk from Leiden Centraal station, taking about 15-20 minutes.
Parking in the city center of Leiden can be challenging and expensive. It's generally recommended to use public transport or walk if possible. If you must drive, look for public parking garages in the vicinity.
Generally, access to the interior is only permitted via guided tours. The exterior and grounds can be admired at any time, but for the full experience, booking a tour is essential.
🎫 🎫 Tickets & Entry
Tickets for guided tours typically cost around €5. However, it's crucial to verify current pricing and purchase through the official channels, as some visitors have reported issues with outdated information or payment vendors.
Tickets are usually purchased online through the Leiden University website or specific event pages. It's advisable to book in advance, especially for English tours, as they can be limited and may not run if there aren't enough participants.
The observatory doesn't have regular public opening hours. Access is primarily through scheduled guided tours or special events like the 'Weekend of Science' or university anniversary celebrations. Always check the official schedule for tour availability.
Yes, English-language tours are often available, particularly during special events or for international visitors. However, these can be less frequent and require advance booking. Confirm availability when purchasing tickets.
If a tour is canceled, especially due to low attendance, you should be eligible for a refund. Some visitors have reported cancellations, so it's wise to have a backup plan or confirm the tour's status beforehand.
🎫 🔭 Onsite Experience
Inside, you'll find historic astronomical instruments, including functional telescopes that you might even get to operate. The building itself is a piece of history, and student guides share its rich astronomical and university heritage.
During guided tours, visitors often have the opportunity to rotate and even use the historic telescopes. While they are functional, seeing celestial bodies depends on the time of day and weather conditions.
Yes, the Old Observatory can be fascinating for children, especially those interested in space and science. The hands-on experience with telescopes and the historical context can be very engaging.
Tours usually last around an hour, providing a good overview of the observatory's history and its astronomical significance. This allows ample time to see the key features and ask questions.
Established in 1633, it is the oldest extant university observatory in the world. It played a crucial role in astronomical research and education for centuries, housing significant scientific advancements.
📸 📸 Photography
Photography is generally allowed inside the observatory, especially for personal use. However, always be respectful of the historical artifacts and other visitors. Tripods might be restricted during tours.
The exterior architecture, especially the iconic dome, is a great photo opportunity. Inside, the historic telescopes and the interior details of the old building offer unique shots.
Drone usage is typically restricted in urban areas and around university campuses due to privacy and safety regulations. It's best to check local drone laws and university policies before attempting to fly a drone.




Social
from TikTok, Instagram & Reddit