The Rookery building was designed by Burnham and Root, one of Chicago's most influential architecture companies. Burnham kept offices here, and the light court (featured in the image) was redesigned by Frank Lloyd Wright--one of many prominent architects Burnham associated with and influenced.
Daniel Burnham was an architect and city planner influential in the development of Chicago. While he designed buildings around the world and influenced the plan of several cities, he is often most associated with the World's Columbian Exposition in 1893 in Chicago and his 1909 Plan of Chicago.
This phamplet is part of the Burnham Plan Centennial, and and explains the 1909 Plan for Chicago. It discusses the legacy of the Plan--both the parts that actually got implememted and the ones that did not. It includes many maps and images, along with interpretive text that highlights and explains original text.
This is a link to a copy of the 1909 Plan for Chicago, commonly referred to as "The Burnham Plan."
This image is a drawing from the 1909 Plan of Chicago. It is oriented looking East over Grant Park and Lake Michigan, and was a depiction of the propsed city center.