001 Chicago sprawls in all directions from the curving lakefront

As Chicago grew rapidly in the 1880s, places that were once rural quickly became part of the city. In 1869, public health advocates, who called for Chicago to purify its air with a “green crown” of trees, joined with real estate interests to badger the state government into creating a ring of major parks linked together by broad boulevards. Growth led to a patchwork of neighbourhood green spaces. In 1934 the city consolidated 22 smaller park administrations to create the Chicago Park District, which operates more than 500 parks covering some 7,000 acres (2,800 hectares). Beyond the city, county forest preserve districts and the federal government have set aside thousands of acres of natural woodlands and have re-created prairies.

A major outdoor gallery for the people, the city’s parks and public plazas feature dozens of monuments and sculptures. Nineteenth-century works in bronze honour such figures as Presidents Abraham Lincoln and Ulysses S. Grant; immigrants have commemorated heroes and cultural figures including Johann Wolfgang von Goethe and Hans Christian Andersen. The philanthropist Kate Sturges Buckingham donated one of the world’s largest fountains—Clarence Buckingham Memorial Fountain (dedicated 1927), which graces Grant Park just east of downtown. Beginning in the 1960s, Chicago acquired contemporary sculptures by Alexander Calder, Claes Oldenburg, Henry Moore, Marc Chagall, Richard Hunt, and others. The most famous is the Pablo Picasso sculpture in Daley Center Plaza, fabricated of steel designed to weather and once described by an unappreciative alderman as “six stories of rusting boiler-plate.”

Like all cities, Chicago is still deeply affected by the physical artifacts of its history. The street pattern is basically an extension of the first city plan of 1830. It is a grid layout, eight blocks to a mile, with major commercial streets around the perimeters of each square mile (2.5 square km). Not all streets conform, some having evolved from meandering Native American trails radiating outward from the river mouth and others having paths determined by the presence of the river and the lake.

Chicago can perhaps be thought of as a fragmented city, with the river branches, major streets, railroad embankments, and (more recently) expressways dividing it into a diversity of neighbourhoods and housing types. There are lakefront high-rises, including Lake Point Tower—once among the tallest apartment buildings in the country and now only one of many such structures in its increasingly fashionable district east of Michigan Avenue—in sharp contrast to thousands of smaller stone-front or brick flats farther inland. Constantly improving public transportation and seemingly unlimited supplies of affordable land have long made single-family housing in the city relatively attainable for many. Outlying neighbourhoods still consist of tens of thousands of bungalows, built narrow and deep to fit city lots. Many of these homes were built in massive subdivisions where developers replicated the same basic house dozens of times.

Chicago sprawls in all directions from the curving lakefront. The vast public-transportation and expressway networks have allowed the metropolitan area, popularly called Chicagoland, to stretch from Kenosha, Wis., around the south end of the lake through northwestern Indiana to the Michigan state line. Early suburban development gave the appearance of a wagon wheel. On the outer rim is a broad arc of older industrial cities—Waukegan, Elgin, St. Charles, Geneva, Aurora, Joliet, and Chicago Heights—that were once independent of Chicago; these cities formed part of a ring that informally defined the outer boundary of the metropolitan area until the latter part of the 20th century. Immediately surrounding the city are such communities as Evanston, Oak Park, Cicero, and Blue Island, all of which resisted annexation by their larger neighbour. Connecting the hub and rim are a number of other older residential suburbs that developed as part of spokelike strings of towns extending outward from the city along several commuter rail lines. The wheel pattern gradually broke down after World War II, when automobile commuting on a growing network of expressways allowed new subdivisions to displace the farms that lay between the spokes of the older rail-commuting suburbs. After 1960 the presence of O’Hare International Airport spurred businesses and light industry to concentrate in the northwest suburbs. New high-technology research facilities and offices developed after 1970 along the “Silicon Prairie” corridor stretching west of the city. As a result, the formerly quiet village of Naperville has been transformed into a sprawling “technoburb” with one of the largest populations in the state. Conversely, some of the older suburbs have replicated the inner-city pattern of aging structures, obsolete industrial buildings, and social problems, while the outward shift of jobs has accelerated the dispersal of residential development far beyond the ring of old industrial towns.