About the 444 celebrations

Get to know our world

We cherish our place in the very heart of Leiden and The Hague - we've been in Leiden for 444 years and in The Hague for almost 20 years now.  Given this long history, we want to celebrate this special year with the residents of these two fantastic cities. So, we're coming to you. We're inviting you to celebrate with us; it's our birthday so it's our treat. We're going to be opening doors and showing you in surprising ways that our research and teaching matter, and what they mean for you.