Which of the following features prominently in Chicago’s architectural landscape and cultural identity?

The feature that prominently represents Chicago’s architectural landscape and cultural identity is Picasso's sculpture. Located in Daley Plaza, this iconic piece of public art, created by the renowned artist Pablo Picasso, reflects the city’s embrace of modernism and its commitment to integrating art within urban spaces. The sculpture has become a symbol of Chicago, attracting locals and tourists alike, and serves as a gathering place for public events and activities.

In contrast, the other options do not hold the same relevance to Chicago's identity. The Golden Gate Bridge is a significant landmark but is located in San Francisco, and thus, does not impact Chicago’s architectural heritage. The Empire State Building is a defining feature of New York City and represents a different cultural context. Similarly, while the Willis Tower (formerly known as the Sears Tower) is indeed a major skyscraper and part of Chicago's skyline, it does not carry the same artistic or cultural significance that Picasso's sculpture does within the city’s identity. Thus, Picasso's sculpture stands out as a key element of Chicago's architectural and cultural narrative.