1894 – Stock Exchange Building, Chicago

Architect: Adler & Sullivan

Widely considered an architectural masterpiece, the thirteen-story building incorporated Sullivan’s signature ornamentation thatcombined geometric forms with expressions of natural foliage.

The Stock Exchange was demolished in 1972, and is often credited with starting the city’s preservation movement. Both the entry arch and the interior of the Trading Room were preserved by the Art Institute. The entry arch is now sited in a park.