Which famous architectural product became so synonymous with its creator's brand identity that it's now instantly recognizable as a signature element of their work?

Buildings aren't just structures—they're powerful brand statements. In architecture, some firms have created signature elements that instantly identify their work, becoming part of their brand identity. This poll explores how certain architectural features have become synonymous with famous architects or firms, creating lasting brand recognition in the built environment. Test your knowledge of these iconic design signatures!

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Frank Gehry's titanium fish-scale facades
Zaha Hadid's hyperbolic paraboloid roofs
Mies van der Rohe's articulated brick patterns
Renzo Piano's hexagonal glass curtain walls