Route of Discoveries

Many exceptional and important discoveries were made in Leiden. The scientific history of Leiden, City of Discoveries, can be seen on every street corner. Roam around the city and discover the exciting stories behind the discoveries on the spot. All you need is your smartphone!


Embark on your own journey of discovery with the Leiden Discoveries app!

  • Download for free
  • Features 28 fascinating discoveries
  • Choose the subjects that you are interested in
  • Collect all the badges
  • Easy to navigate with GPS

Also works offline

Watch the film or go to!