The pre-conference workshop ‘Open Data for Open Cities: Re-use and discovery level‘ was held at the 20th AGILE International Conference on Geographic Information Science, Wageningen, 9th May 2017.  Key topics of the workshop were the impact of open data in cities and spatial point analysis processes. During the workshop, Bastiaan van Loenen gave a presentation on the relevance and importance of geoportals as part of the open data ecosystem. In his presentation, he presented some key results and findings of his research on geoportals worldwide.