Standing as a sentinel at the intersection of LaSalle and Washington Streets, 121 N LaSalle St Chicago IL represents a central chapter in the architectural and financial history of the Windy City. More than just a Class A office tower, this 43-story Art Deco masterpiece anchors the western edge of the Loop’s financial district, serving as a physical bridge between the historic banking corridor and the civic center anchored by City Hall and the Daley Center. For nearly a century, the building has housed the engines of Chicago’s commerce, evolving from the headquarters of a powerful banking dynasty into the global nerve center for one of the world’s most prestigious law firms.
The Historical Context: Filling the "Gap" in the Skyline
To understand the significance of 121 N LaSalle, one must appreciate the void it filled. The late 1920s saw a frenzy of skyscraper construction in Chicago, but the 1929 stock market crash brought the vertical expansion of the Loop to a sudden, grinding halt. For years, a conspicuous gap existed in the LaSalle Street canyon—a "missing tooth" in the smile of the financial district.
Quick note before moving on.
LaSalle National Bank, founded in 1865 and a titan of Midwest finance, commissioned the building to serve as its new headquarters. Construction began in 1929, mere months before Black Tuesday. Remarkably, the project continued through the early depths of the Great Depression, providing critical employment and a potent symbol of the city’s resilience. When it opened in 1930, it stood as the last major skyscraper completed in Chicago for nearly 25 years, until the construction of the Inland Steel Building in 1957. This timeline grants the structure a unique status: it is the final flourish of the first great Chicago School era and the prologue to the second.
Architectural Pedigree: Graham, Anderson, Probst & White
The design fell to Graham, Anderson, Probst & White (GAP&W), the successor firm to D.Burnham & Co. H. and the undisputed masters of classical commercial architecture in early 20th-century Chicago. Their portfolio includes the Wrigley Building, the Field Museum, Shedd Aquarium, and Union Station. At 121 N LaSalle, they adapted their classical rigor to the emerging Art Moderne aesthetic, stripping away excessive ornamentation in favor of vertical emphasis and geometric precision And it works..
The building rises 530 feet (162 meters) through a series of mandated setbacks dictated by the 1923 Chicago Zoning Ordinance. Practically speaking, the exterior is clad in smooth Indiana limestone, a material choice that conveys permanence and gravity. These setbacks were not merely regulatory compliance; they were sculpted into the building’s silhouette, creating a tiered profile that catches the light dramatically at sunset. The spandrel panels between windows feature stylized, low-relief carvings—geometric foliate patterns and shields—that hint at classical tradition without mimicking it, a hallmark of the Moderne transition.
The Iconic Lantern: A Beacon on LaSalle Street
The building’s most distinguishing feature is its illuminated lantern crown. Set back from the main roof slab, this octagonal tempietto is wrapped in bronze-framed glass and topped with a copper pyramid roof. Consider this: historically, this lantern served a practical navigational purpose, acting as an aerial beacon for early aviators navigating the Chicago lakefront. Today, it serves as a glowing landmark, often lit in colors to commemorate holidays, civic events, or charitable causes (such as pink for Breast Cancer Awareness or blue for the Cubs/Blackhawks playoffs). It transforms the building from a daytime office block into a nocturnal sculpture, visible for miles along the straight shot of LaSalle Street Which is the point..
The Interior: Grandeur Meets Functionality
While the exterior projects stoic strength, the interior reveals the opulence expected of a premier banking headquarters. The two-story main banking hall—now repurposed but largely intact—remains the building’s soul. Soaring 40 feet high, the space is defined by massive Travertine marble columns with Corinthian capitals, supporting a deeply coffered ceiling painted in muted golds and blues Small thing, real impact..
The walls feature a series of murals by the renowned artist John Warner Norton. They are significant examples of the American Renaissance mural movement, blending Art Deco stylization with narrative clarity. Titled "The History of Banking" and "The History of Commerce," these works depict allegorical figures and scenes of trade, agriculture, and industry. The original teller cages, crafted in bronze with nuanced grillwork, have been preserved in situ, repurposed as reception and concierge stations—a masterclass in adaptive reuse And that's really what it comes down to..
The elevator lobbies retain their original Verde Antique marble walls and bronze elevator doors adorned with stylized eagle motifs. A modernization program in the early 2000s upgraded the machinery to destination-dispatch systems while meticulously restoring the cab interiors with new bronze panels and lighting that mimic the original 1930s glow.
Evolution of Tenancy: From Vault to Legal Library
For over six decades, the building was synonymous with LaSalle National Bank. The vaults in the sub-basement—engineered with massive circular doors and time locks—were the stuff of legend, reportedly holding a significant portion of the city’s liquid wealth. Following the bank’s acquisition by ABN AMRO (and later Bank of America), the building’s identity shifted.
And yeah — that's actually more nuanced than it sounds.
The critical moment arrived in 2004 when Kirkland & Ellis LLP, a global law firm founded in Chicago in 1909, signed a long-term lease for approximately 700,000 square feet, effectively taking the entire tower. This move consolidated the firm’s scattered Loop offices into a single, iconic address. The build-out was a massive undertaking: converting cellular banking floors into open-plan legal floors, installing advanced data centers, and creating a private, secure client center on the upper levels Still holds up..
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