A salvaged window house in Christiania, Denmark.
From Tiny House Blog:
A town within a city, a rebel neighborhood within a well-ordered society. This is Christiania (Freetown), Denmark, a small community smack dab in the middle of Copenhagen, Denmark. Within this community are tiny houses, built by hand and with whatever materials are within reach. Christiania began in 1971 as an occupation of disused army barracks in the southern portion of Copenhagen near a lake. The 900 or so freethinking individuals who inhabit the area are a self governing community who refuse to pay taxes to the Danish government, run their own businesses and schools, live without cars on unpaved roads, build their own houses, restaurants and civil buildings and even have their own currency.