Exceptional architectural transformations that bring new life and function to existing structures. In most parts of the world, developed areas are predominantly shaped by existenthouses, buildings and constructions. One of the biggest challenges architectsface today is creatively bringing new life and function to these existing structures.The transition from the industrial age to our current information societyconsequently demands and fosters phenomenal possibilities to redefine theseold structures.Build-On examines architecture in flux between tradition and transformation.The book presents exceptional examples of large-scale radical renovations andadaptations of industrial wasteland, bunkers, abandoned churches, forsakenrural centres and obsolete underground systems as well as creative transformationsof smaller building units in the urban and rural context. These overlookedarchitectural sites are reborn as inhabitable residences, working spa