Universiteit Leiden

nl en

Scientists of the Faculty of Science enlighten you during the Afternoon and Night of Discoveries

Light and dark, that is the theme of the Night of Discoveries. The yearly event will take place from Saturday 21 September to Sunday 22 September 2019, in the centre of Leiden. The programme promises performances, lectures, workshops and tours in the field of science, arts and culture. This year, for the first time, there is an afternoon programme for young children. Scientists of the Faculty of Science know how to handle this theme. They like to show you the light in the dark night...


Please note: most activities are in Dutch. For a full overview of the English programme, check out the website of the Night of Discoveries (top left English programme)

Practical information

When: The Night of Discoveries will take place on Saturday 21 September to Sunday 22 September 2019, from 5:00 pm to 1:00 am in Leiden.

Where: Various indoor and outdoor locations around the Pieterskerk square, Hortus botanicus, Old Observatory and Rapenburg. A block schedule will appear three weeks before the festival in the app and on the website.


Watch the aftermovie from last year!

Due to the selected cookie settings, we cannot show this video here.

Watch the video on the original website or

Afternoon event

This year, for the first time, there is an afternoon event during the Night of Discoveries. This event is aimed at children between 8 and 12 years old, with short lectures for kids and a number of exciting scientific exhibits. The Faculty of Science is participating in this afternoon programme. 

At the Hortus Botanicus you will learn more about smart plants; Liselotte Rambonnet will show how plastic ends up in our Leiden canals, Bart Clauwens will show you how to 'talk with an alien', and Robin de Lange will teach you more about 'learning in Virtual reality'. The programme takes place in the National Museum of Antiquities between 1.30 and 4.30 p.m. You can find more information on the website.

This website uses cookies.  More information.