Very nice idea but useless in Paris. Dots are grouped too aggressively and don't have captions. Need to ungroup and click on each, gave up after checking 20 metro stations and landmarks I already know. Filters are unreadable and puzzling like "Pages including reco...", just wiki categories apparently. Can filter for metro stations but can't filter them out. It's barely working and have 1k downloads but already shows…
I like the idea and will definitely visit again.