As one of the most historically significant buildings in Chicago, The Rookery is a unique enclave for businesses that value a prestigious presence. An icon in the center of Chicago's downtown Financial District, The Rookery seamlessly combines the flair of an era gone by with state-of-the-art building systems and technology. Designated a Chicago Landmark in 1972 after being added to the National Register of Historic Places in 1970, The Rookery is universally considered an architectural masterpiece.