In Jonathan Safran Foer's "Extremely Loud and Incredibly Close," he highlights the significance of immigration to New York City. The Palazzo, a renowned building in the city, is constructed from materials sourced from various places around the world, illustrating how the city's identity is shaped by diverse influences. This serves as a metaphor for the city's greatness, which is largely attributable to the contributions of immigrants.

Foer's narrative intertwines themes of loss and exploration, reflecting the experiences of characters navigating their lives amid the backdrop of a city that embodies a collective heritage. Through the story, he emphasizes that just like the Palazzo's eclectic materials, the rich tapestry of New York is woven from the dreams and struggles of countless individuals who have shaped its history.