"Radical Change, Discovery, Reform" is part of a three-volume architectural history. This second volume presents perhaps the most interesting period of Berlin architecture, associated with names such as Ernst von Ihne, Friedrich Hitzig, Paul Wallot, Martin Gropius or Alfred Messel. An abundance of material fills out a detailed picture of the city on the verge to modernity. Showpieces and government buildings of the Kaiserreich; villas and residences; even industrial and comunications buildings and the S-Bahn and U-Bahn.