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Visitor Center

Staring July 2nd, a new exhibition will be on display at the Old Observatory: More-than-Planet. This exhibition focuses on the following question: how do we imagine our planet?

Explore this question from a unique perspective at More-than-Planet. Consider the factors that shape our (space-based) views on environmental pressure and conflict by immersing yourself within the artworks of five cutting-edge international artists.  These transdisciplinary artworks take a critical look at the balance between humans and the environment, between technology and the human experience, and between satellites and the Earth we observe through them.

Learn more about the works and their artists.

More-than-Planet is produced by the Waag Society and Old Observatory. More-than-Planet Exhibition is part of the Leiden 2022: European City of Science programme and a side event of the European Open Science Forum.

The exhibition is open from the 2nd of July until the 23rd of December. To visit the Old Observatory and the botanical garden, you need two separate tickets.

Opening Hours

Starting July 2, the Old Observatory Visitor Center is open to the public at the following times:

  • Monday: closed
  • Tuesday - Friday: 13:00-17:00
  • Saturday - Sunday: 11:00-17:00

Guided tours

In addition to the exhibition, you can also take a guided tour from an astronomy student. In one hour, the student will tell you more about the exhibition and you will be taken to one of our historic telescopes. Please note: because these tours are during the day, it will not be possible to look through a telescope during the walk-in tours.

A maximum of 15 people can participate in a tour and it is not possible to reserve a place beforehand. To be sure of a spot, we recommend coming 30 minutus in advance. You can buy a ticket for the tour at the entrance of the visitor center.
Tours take place on:

  • Tuesday - Friday:
    • 14:00-15:00 (Dutch)
    • 15:30-16:30 (English)
  • Saturday - Sunday:
    • 11:30-12:30 (Dutch)
    • 13:00-14:00 (Dutch)
    • 14:30-15:30 (English)
    • 16:00-17:00 (English)


There are two tickets for the visitor center. With a standard ticket you can visit the exhibition. With a guided tour ticket you can join a guided tour in addition to the exhibition. The prices are:

  • Ticket exhibition: €5
  • Ticket exhibition + guided tour: €8
  • People aged 4-12: €2 discount
  • People up to 3 years: free

The tickets can be bought at the entrance of the visitor center. Please note that this is a separate ticket that you must purchase in addition to a ticket to the Hortus. We only card accept payment and unfortunately we cannot accept cash at this time.


How to get there?

You can reach the visitors center through the main entrance of the Hortus botanicus Leiden. From 30 April until the end of September there is a second entrance on Saturdays and Sundays via the Talcott house, at the end of the Sterrewachtlaan. Please note that to visit the Old Observatory and the botanical garden, you need two separate tickets.. At the visitor center you can buy your ticket for the exhibition and guided tour.

  • You are allowed to take photographs in the visitor center. It is not allowed to use flash or a tripod. If you want to photograph for commercial or journalistic purposes, please contact us. 

  • We ask you to be considerate of other visitors and to limit your use of the telephone as much as possible.

  • Bringing food or drinks into the exhibition space or the domes is not allowed.

  • Smoking is not allowed in the Old Observatory.

  • Pets are not allowed in the visitor center. However, an assistance dog may be brought inside.

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