2. The Mirrorcube, Sweden
Tucked up in the Swedish trees is a dwelling that blends so perfectly into the surrounding forest you will have to look twice to realize it is actually there. The Mirrorcube is camouflaged by outer walls that reflect the surroundings, creating a treehouse unlike any other. Thoughtfully, this mirrored house has a special covering that only birds can see, thus avoiding any avian accidents. The inside is spectacular, with a double bed, bathroom, lounge, rooftop terrace and six windows that offer spectacular views near the Lule River.