Since 2016, the tour de CLARIN initiative has been periodically highlighting prominent user involvement activities in the CLARIN network in order to increase the visibility of its members, reveal the richness of the CLARIN landscape, and display the full range of activities that show what CLARIN has to offer to researchers, teachers, students, professionals and the general public interested in using and processing language data in various forms. In 2019, we expanded the initiative to also feature the work of CLARIN Knowledge Centres, which offer knowledge and expertise in specific areas provide to researchers, educators and developers alike. Initially conceived as a series of blog posts published on the CLARIN website, Tour de CLARIN soon p...