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Shanghai International Financial Center

Shanghai, China

2009‑2014

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Bayer Headquarters

Leverkusen, Germany

1997‑2002

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Merck Serono Headquarters

Geneva, Switzerland

2002‑2006

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Shure Corporate Headquarters

Niles, Illinois

1997‑2002

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Mannheimer 1 & 2

Mannheim, Germany

1988‑2004

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Principal Financial Group

Des Moines, Iowa

1993‑1996

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About / Helmut Jahn never stopped changing

Today, the firm that bears his name is just as restless and curious, reinventing itself and the world around it.

See our legacy