Which architectural firm is known for its distinctive 'diagrid' structural system that has become a recognizable brand element in projects like 30 St Mary Axe (The Gherkin) in London?

In the world of architecture, certain firms have created instantly recognizable structures that serve as powerful brand identifiers. These signature buildings become synonymous with their creators and often transform into cultural landmarks that define skylines and cities. Test your knowledge of how architectural firms have used distinctive design languages to create lasting brand recognition through their most famous works.

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Foster + Partners
Zaha Hadid Architects
SOM (Skidmore, Owings & Merrill)
Renzo Piano Building Workshop