This is a rammed chalk building. Depending on the weather and the time of day the building lights, warms or cools itself without producing a scrap of CO2.
Beautiful Chalk Rammed Earth
Pines Calyx conference centre is a beautiful rammed chalk building with a timbrel vaulted ceiling in St Margarets Bay, England.
from Home Services Blog http://www.facebook.com/naturalhomes/posts/731976330188767