Sun-dried clay is one of the oldest building materials that has been used for more than 10.000 years to build houses, mosques, churches, palaces and cities. Currently one-third of the global population lives in this vernacular architecture made with the man-made stone-like construction material. This building material, commonly made from a mix of clay and organic materials, is resisting the long span of time and weathering. Used correctly, the clay making technology has many benefits: the technique used is very simple with zero maintenance cost, local availability and affordability, and has a good thermal and acoustic insulation. Because of this, earthen architecture has many advantages from a sustain ability perspective. The use of this eco-friendly construction material nowadays could be a viable alter Save native to solve our 21st Century big concerns of energy and climate change.