For lovers of maths, there's a walk they can go on all by themselves: The Leiden Maths Walk with challenging mathematical questions.

There have been a lot of amazing and important discoveries done in Leiden. Follow the Route of Discoveries: see new places in the city or fi...

Discover the hidden life in the soil! 

Museum De Lakenhal shows planktonium by Jan van Ijken: a magical art film about the life of plankton.

For lovers of maths, there's a walk they can go on all by themselves: The Leiden Maths Walk with challenging mathematical questions.

There have been a lot of amazing and important discoveries done in Leiden. Follow the Route of Discoveries: see new places in the city or fi...

Maths is really everywhere. Make a whirlpool and build your own bridge. Discover what sound looks like and play with perspective like an art...

There have been a lot of amazing and important discoveries done in Leiden. Follow the Route of Discoveries: see new places in the city or fi...

Maths is really everywhere. Make a whirlpool and build your own bridge. Discover what sound looks like and play with perspective like an art...

Museum De Lakenhal shows planktonium by Jan van Ijken: a magical art film about the life of plankton.

For lovers of maths, there's a walk they can go on all by themselves: The Leiden Maths Walk with challenging mathematical questions.

Museum De Lakenhal shows planktonium by Jan van Ijken: a magical art film about the life of plankton.

For lovers of maths, there's a walk they can go on all by themselves: The Leiden Maths Walk with challenging mathematical questions.

There have been a lot of amazing and important discoveries done in Leiden. Follow the Route of Discoveries: see new places in the city or fi...

Maths is really everywhere. Make a whirlpool and build your own bridge. Discover what sound looks like and play with perspective like an art...

There have been a lot of amazing and important discoveries done in Leiden. Follow the Route of Discoveries: see new places in the city or fi...

Maths is really everywhere. Make a whirlpool and build your own bridge. Discover what sound looks like and play with perspective like an art...