It is also the nickname of the Citizens’ Initiatives Pavilion building that NGOs such as WWF, Red Cross, Oxfam, etc are preparing for the Expo Zaragoza in 2008.
Ricardo Higueras, the architect responsible for the pavilion explains that domes are very old. In this case it is a concentric dome. The shape chosen comes from the ceramic water jug, from which it takes the temperature regulation system. Have you ever been in a building made of mud?