International Building Exhibition Berlin

The International Building Exhibition Berlin (German: Internationale Bauausstellung Berlin) (IBA Berlin) was an urban renewal project in Berlin, Germany. Initiated in 1979, it was completed in 1987, matching the 750th anniversary of the founding of Berlin. The IBA followed two distinct strategies: "careful urban renewal" and "critical reconstruction."

In 1979 Josef Paul Kleihues was appointed director of the IBA Neubau section by the Berlin Senate; Hardt Waltherr Hämer was director of the less-publicised Altbau. He organised the exhibition along two distinct themes: IBA Alt aimed to explore methods of "careful urban renewal" and IBA Neu for experimenting "critical reconstruction." He invited many international architects including Peter Eisenman, Vittorio Gregotti, Herman Hertzberger, Hans Hollein, Arata Isozaki, Rob Krier, Aldo Rossi and James Stirling. Consequently, the IBA was called by Time magazine "the most ambitious showcase of world architecture in this generation".

Bonjour tristesse apartment building by Alvaro Siza

Haus am Checkpoint Charlie, by Peter Eisenman

Haus am Checkpoint Charlie, by Rem Koolhaas

Apartments at Lützowplatz, by Oswald Mathias Ungers

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