It’s absolutely brilliant. You can check out more stuff by the artist, Jason Heuser on Etsy.
Rick Aschmann has spent years creating a map of North American dialects. In his map, he has amazing details of the different dialects throughout Canada and the United States.
It’s not perfect, but at least someone is trying to catalog all the dialects within North America. There are audio samples of many of the dialects as well as the capability to zoom in to a region on his map. Click the map above, but, beware, if you like this sort of thing, your day may disappear as you immerse yourself in all the details.