The University of Ghent has a website on which you can listen to audio recordings of more than 1000 different Dutch dialects from the Netherlands, Belgium and Northern France.
To native speakers, a lot of these sound extremely distinct from each other. However, I'm really curious to know how they sound to people who do not know any Dutch. If you go to for instance the South-West of the map, does the language sound different to you from the recordings in the North-East?