Joshua Treehouse
Joshua Tree House – The house is composed of five shipping containers on a steel frame for strength. It’s made from recycled steel and has a living roof with native plantings and greywater irrigation, a shade canopy to cut down on sun and wind assaults, and two big water tanks (one 3,000 gallon, one 10,000 gallon).
See more at: http://goo.gl/nhmsfU