Which iconic architectural project was specifically designed to become the brand symbol for its city, resulting in an estimated tourism revenue increase of over $2.5 billion within its first five years?

In the world of architecture, iconic buildings often become powerful brand symbols for cities and corporations alike. The distinctive silhouette of certain structures can become instantly recognizable worldwide, adding immense value to the brand they represent. This poll tests your knowledge of how architectural design has contributed to some of the world's most valuable brand identities.

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The Guggenheim Museum in Bilbao, Spain (designed by Frank Gehry)
The Shard in London, UK (designed by Renzo Piano)
The CCTV Headquarters in Beijing, China (designed by Rem Koolhaas)
The Walt Disney Concert Hall in Los Angeles, USA (designed by Frank Gehry)