Poster Caption: This panoramic photograph of Chicago was taken by Christopher Gjevre. It features a twilight view of downtown Chicago as seen from Lake Michigan, the third largest of the Great Lakes and the only Great Lake entirely in the United States. The tallest building on the left is the 1454-foot, 110 floor Sears Tower. The tallest building on the right is the John Hancock building. The Ferris wheel is located on the popular Navy Pier. Chicago was incorporated in 1837 and quickly became a major grain exporter. Industries followed and the railroads fanned out from the city to deliver Chicago’s goods throughout the nation.