I think I found a place to be considered a new "Back Door."
It's not easy to get to, no big museums or churches, not overrun by tourists, a handful of small hotels, no tacky souvenir shops, beautiful scenery, friendly people--many of whom speak English, lots of history and local culture dating back over 1000 years.......and it's in Europe.
Does that qualify for a Back Door?
If so, I'm there now and can't wait to come back. It was the number one spot on my travel bucket list and I absolutely love the place.
Where is it? The Faroe Islands