With the passage of time, all things deteriorate or the character of their use changes. Until now it has been common to throw objects away when they are worn out or broken; to demolish buildings when they are outdated and dysfunctional; to raze entire neighborhoods for urban development; to destroy natural areas for new construction. Today we have realized that conservation is one of the keys to a sustainable future, which will only be possible if architects, designers and other professionals work together on strategies based on renovation, reuse and regeneration of both the built environment and the natural landscape.