Designed by UK-based design/build firm Blue Forest, the beautiful eco-PERCH is an inviting luxury retreat that takes a cue from treehouse living. Read more: Blue Forest's Beautiful Eco-PERCH Lets You Live Life Amongst the Trees
Earth House Estate Lättenstrasse located in Dietikon, Switzerland If I had a ton of money, I would invest in building a community of Hobbit holes in beautiful country side places. Wish I could live in one of these!
Sky Garden House by Guz Architects. Wierd, but I think it would be really nice to inhabit. It's also an interesting application of green roofs/roof gardens to a very modern, otherwise steel and concrete design.