Just found an interesting little video (Älvdalska förklarad = 'Elfdalian explained').
Elfdalian is a separate language spoken in Dalarna, Sweden by a few thousand people.
In Swedish, the letter W is rarely used, and when it is it is pronounced as V. But Elfdalian has W and it's pronounced just like English W. So, 'white' is vit in Swedish, but wait in Elfdalian, pronounced like English white.
Elfdalian also has the letter Ð, ð, which features not in Swedish but in Icelandic and Faeroese.
How cool is that?!
https://www.youtube.com/watch?v=cLE7wfv3r6w