10 South LaSalle, Office skyscraper in LaSalle Street financial district, Chicago, USA
10 South LaSalle is a 37-story office building in Chicago's financial district featuring a distinctive dark blue facade with green accents above its marble-clad lower levels. It occupies a prominent corner site where Madison and LaSalle streets meet, providing commercial space for financial sector businesses.
The structure was completed in 1989 and incorporates marble elements salvaged from the original Otis Building that previously stood at this corner. This reuse of historic materials connects the modern tower to Chicago's earlier financial development.
The name comes from its street address on LaSalle, one of Chicago's most recognized financial corridors where trading and banking have anchored the neighborhood for generations. The dark blue facade and green details reflect the contemporary design language that dominated the area during the late 1980s.
The building sits at a central intersection in the financial district, easily accessible on foot from transit hubs and neighboring office complexes. Its marble base and prominent entrances make orientation straightforward, whether you are passing through or exploring the public lobby areas.
The east wall features a continuous series of bay-like projections extending from the 19th floor to the roof, creating a striking vertical rhythm. This architectural detail sets it apart from neighboring towers and becomes especially noticeable when light hits the facade at different times of day.
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