Underground Homes...

should be more popular! Certain climates provide that these would work well. It Australia for example they mine for Opal and make homes out of the holes they carved in the earth so the home basically paid for itself from it. Places with sand storms and tornadoes but little flooding are magnificent for such providing a safe environment. Instead of always thinking to build on top of the earth I like the idea of becoming a part of it... ONE WITH THE EARTH :)