Jackson Park is a 551.5-acre (223.2 ha) urban park located on the South Side of Chicago. The park was designed in 1871 by Frederick Law Olmsted and Calvert Vaux, then greatly remodeled in 1893 to serve as the site of the World's Columbian Exposition, making it one of the largest and most historically significant parks in the city.

Chicago is the most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388 in the 2020 census, it is the third-most populous city in the United States after New York City and Los Angeles. As the seat of Cook County, the second-most populous county in the U.S., Chicago is the center of the Chicago metropolitan area, often colloquially called "Chicagoland" and home to 9.6 million residents.