This article was originally published on November 2, 2015. To read the stories behind other celebrated architecture projects, visit our AD Classics section.

As Norman Foster describes in his firm’s monograph, Foster 40, “Our transformation of the Reichstag is rooted in four related issues: the Bundestag’s significance as a democratic forum, an understanding of history, a commitment to public accessibility and a vigorous environmental agenda.”[1] Foster’s description sounds straightforward enough, but the process of creating the New German Parliament at the Reichstag was only the latest entry in the long, complex, and contentious history of the building.