slideshow of a prefab summer cabin built on Madeline Island in Lake Superior. At 1600 square feet, though, it's perhaps too large to call a cabin. Treehugger has another article, too.
It's built through a prefab system called "FlatPak", which has been developed by a Minneapolis-based architectural firm. Dwell has a longer article about Flatpaking. It's an interesting concept that makes for a stylish house.