Oh my goodness, look at this amazing hobbit house--and it's for real. A Welsh man built it himself, along with his father-in-law, and now he lives there with his wife and two little sons. And it only cost about £60/sqm excluding labour which is ridiculously cheap for a new home. What a magical place to grow up! (Can you imagine ordering a pizza there?!) The father made a website which has in-depth descriptions of how he built it, plans, ideas, etc. for his low impact woodland home! :)