We celebrate Leids Ontzet, the Relief of Leiden, on Monday 3 October. This means that all University buildings in Leiden will be closed. The University buildings on Campus The Hague will be open, but there will be no classes.

If you do research on Leidens Ontzet in Leiden, you can count on a lot of interest. But Leiden Kennisstad interns Marieke Nolten and Alexander Nuijten had not expected there would be quite so much interest. They concluded a year of research with the presentation of a scientific paper.

The LUCL Office coordinates the day-to-day running of the institute. It is responsible for handling general enquiries and can assist with all practical matters concerning LUCL and its staff.

Leiden is a lively university city, brimming with history and boasting a student life that’s tangible just about everywhere.

Glorious sunshine, dozens of enthusiastic academics and huge numbers of Leiden residents ensured that this year’s special jubilee version of 3 October University was a great success.

2024 has been an eventful year, and this is reflected in our social media posts. An overview of the most liked, most shared or most impressive posts.

Leiden is a lively university city that’s brimming with history and boasts a student culture that’s tangible just about everywhere. Read on to discover what Leiden has to offer and get a foretaste of what you can expect.

Leiden is a lively university city that’s brimming with history and boasts a student culture that’s tangible just about everywhere. Read on to discover what Leiden has to offer and get a foretaste of what you can expect.

Emily den Boer of LAPP visited the Canal Cups Expo, displaying the plastic cups cleaned up by students after Leidens Ontzet.

Do you remember the 3 October celebration during your study time in Leiden? And do you miss it every year, while living abroad?

Leiden is a picturesque university city that’s brimming with history and boasts a student culture that’s tangible just about everywhere. The university has contributed to the city’s unique atmosphere for over 400 years, since its founding in 1575. Leiden’s historical centre is full of student associations,…

Important dates in the Academic Language Centre calendar

Leiden has much to celebrate: first, 450 years of the Relief of Leiden and then 450 years of Leiden University. And that is no coincidence.

Canal Watch (De Grachtwacht), which has been cleaning canals since 2018, has received the Dutch Research Council (NWO) Communication Initiative Award.

On Friday 8 February, the first Plastic Avengers Conference took place in Amsterdam. Initiator Merijn Tinga, the Plastic Soup Surfer from Leiden, brought together ‘independent plastic fighters' to arrive at a manifesto against plastic pollution. The Leiden Advocacy Project on Plastic was also invited…

Impressions by Wouter Baas and Caroline Schep

The Netherlands is informal, friendly and welcoming. Everyone can feel at home here, regardless of religion, ethnic background or sexual orientation. The Dutch speak many languages and the countryside and cities are easy and safe to travel through, by any means of transport. No matter where you come…

What is freedom worth in times of hunger? ‘Beleg’ is a modern interpretation of Lucretia van Merken’s 1774 play. With five performances in Leiden’s Schouwburg theatre, the play is a prominent part of the Relief of Leiden celebrations, and Leiden alumni are playing a big role. Take a look behind the…

Research master's student in history Jesse Dijkshoorn collaborated on a transcription system for medieval texts. ‘It’s nice to make the Middle Ages accessible to people.’

Try to resolve the nitrogen problem, go on a regeneration journey or take part in psychological research: discover this and more at the new and improved 3 October University, ‘WetenschapsWarenMarkt’.

For the first time ever, a float from Leiden University is taking part in the Grand Parade during the Relief of Leiden or Leidens Ontzet. October 3 is one big party in Leiden, and the University is joining in big style to celebrate its 444th anniversary.

After a long night of partying, hundreds of people head to Leiden’s Van der Werfpark early on 3 October for a good singsong. Lecturer in Dutch literature Olga van Marion helped compile the new songbook for the occasion. Which songs were left out and which new hits have taken their place?

On Friday 8 February, the first Plastic Avengers Conference took place in Amsterdam. Initiator Merijn Tinga, the Plastic Soup Surfer from Leiden, brought together ‘independent plastic fighters' to arrive at a manifesto against plastic pollution. The Leiden Advocacy Project on Plastic was also invited…

They have known each other since they were small but Rianne and Tom first fell in love when working together at the university. That love culminated in a fairytale wedding amid all the revelry last 3 October.