These houses are built to make the best use of renewable resources and designed to guarantee environmental protection and the health of the community. Ecological housing has in fact ceased to be the choice of just a few radical ecologists to become one of the fastest developing interests in modern society. Along with the people's interest, that of the architects dedicated to designing this type of housing has also grown, with aesthetics and comfort no way incom¡patible with the principles of sustainable development. Research into alternative materials and new ways to apply traditional prime materials have paved the way to create a whole new range of superb designs.áá