This 45 minutes presentation explainsthe added value of putting images, stories and metadata of digitised collection highlights of the KB, national library of the Netherlands, into the Wikimedia infrastructure. By putting our collection highlights into Wikidata (metadata), Wikimedia Commons (images) and Wikipedia (stories), dozens of new functionalities have been added. As a result of 'Wikifying' these collection objects, you can do things with these highlights that were not possible before. It is based on the 5 articles of the series 50 cool new things you can now do with KB’s collection highlights Outline: KB's collection highlights (medieval manuscripts, historical atlases, alba amicorum, flora & fauna books) , part of our national heritage Presentation of our collection highlights via KB websites Explainer: Wikipedia and other Wikimedia projects : Wikidata and Wikimedia Commons Why Wikipedia is so useful – Case 1 --> Visitor stats of kb.nl vs. Wikipedia --> Institutional websites have limited outreach Presentation of our collection highlights via Wikimedia platforms Why Wikimedia is so useful – Case 2 --> The great 107 magic trick --> By uploading our collection images to Wikimedia Commons and collaborating with the community to include them in Wikipedia, we can greatly improve the visibility of our collections. How reusable are the metadata, image and stories on KB websites? --> Does the KB offer building blocks people can create stuff with? Our collections as presented on KB websites are nice to view and read (consume)…but rather unsuitable as building blocks for people to build stuff with (create). Our collection highlights as (serious) building blocks for tech community: Developers, app builders, tech companies, AIs, digital humanities, data scientists, hackathons, LOD world, NDE, Europeana etc. The Wikimedia infrastructure: for all your serious building blocks - LEGO Technic box Advantages of the Wikimedia infrastructure Examples of how the Wikimedia infra is used to build ...