Originally Posted by tricepilot
You nailed it correct with the Catalan, Sjoerd, which I've found both in Barcelona and now in Valencia. Here, not only the spoken dialect, but included in much of the signage as well.
Mexico, Canada, and the U.S. all have their thick regional dialects as well.
Parts of Louisiana have people beyond understanding on the first hearing.
Sounds like Newfoundland, they speak English but you'd never know it.