Incredible Underground Residence in Switzerland
http://freshome.com/2009/12/05/incredible-underground-residence-in-switzerland/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+FreshInspirationForYourHome+%28Fresh+Inspiration+for+Your+Home%29&utm_content=Yahoo%21+Mail
Earth houses designed by Peter Vetsch
http://freshome.com/2008/06/24/earth-house-estate-lattenstrasse/
Earth houses in Switzerland
http://www.erdhaus.ch/main.php?lang=de&fla=y&cont=start
http://www.erdhaus.ch/main.php?fla=y&lang=de&cont=drawings
