https://umap.osm.ch/en/map/open-table-tennis-switzerland_3307

Tjoho. 4000 it is.

I change the search pattern once again. There is a OGD dataset called SwissNAME3D which I filter in QGIS by “OBJEKTART” = ‘Schul- und Hochschulareal’. Then I use the Go2nextfeature3+ plugin to scroll through all these kind of schools just to look for table tennis tables. As today I passed 1200 of about 10400 school objects in that database. So expect some more TTT to come. :-)