Critics glorified and reviled Louis Sullivan’s renegade design for the Transportation Building at the 1893 World’s Fair. The polychromatic color scheme and the grand Golden Door received the most commentary at the time of the Columbian Exposition, and both elements continue to fascinate students of architecture today. Louis Sullivan’s striking design for the Transportation Building featured a polychromatic façade and majestic “Golden Door” entrance on the east side. [Image from Picturesque World’s Fair. W.B. Conkey, 1894; digitally edited [...]