Treehotel owners Britta Jonsson Lindvall and Kent Lindvall enlisted six designers to create the 13-by-13-foot Mirrorcube, a reflective glass cube built around the trunk of a pine. It blends into the surrounding forest so well that the architects plan to cover it with a transparent ultraviolet film to alert flying birds, so they won't smash into it. Click here to see the interior and other modern tree house designs.
This time of year, aurora borealis lights up the northern skies. Celebrate this natural phenomenon with five of our favorite modern houses with serious views of nature's best light show.
Symbolic of both blissful childhood and the threshold between humanity and nature, tree houses hold a unique position in the world of modern architecture and design.