Which architectural style is NOT commonly associated with Chicago's historical buildings?

The Federal style is primarily associated with the late 18th and early 19th centuries, predominantly in the eastern United States. It features characteristics such as symmetry, classicism, and intricate detailing, often influenced by neoclassical architecture. This style was more prevalent in cities like Philadelphia and Boston during its heyday and does not reflect the architectural evolution that is specifically tied to Chicago.

In contrast, the Chicago School, Modernist, and Art Deco styles are directly linked to the city's architectural identity. The Chicago School emerged in the late 19th century and is recognized for its early skyscrapers and innovative use of steel-frame construction. Modernist architecture, which took root in the 20th century, embraced minimalism and functional design, also featuring prominently in the city's skyline. Art Deco, which gained popularity in the 1920s and 1930s, is noted for its decorative arts and geometric motifs, leaving a distinct mark on Chicago's historical fabric.

Understanding these styles and their geographical and historical contexts highlights why the Federal style stands apart as one not commonly associated with Chicago's architectural landscape.