Modern Tiny House
Modern Architecture & Beautiful House Designs | #1277
Traveling Cars Adventures by Kim Leuenberger
Cabins and Cottages
hand-built floating cabin
Mirror Cube Treehouse Hotel, Sweden Amazing work of art! Will eventually have 25 rooms each it's own tree house designed by a different architect.
Cabin built for $500 with re-purposed windows in the mountains of West Virginia (with probably very little energy efficiency, but hey, it's pretty).