Incredibly huge igloo which is located... well, in the middle of nowhere... on the George Parks Highway. Abandoned and a bit creepy, too.
More info at Curious Place Blogspot http://curious-places.blogspot.cz/2012/03/modern-igloo-near-cantwell-alaska.html
Address 00006, United States
Coordinates 63°11'15.785" N -149°21'35.888" E