Lincoln Park is a 1,208-acre (489-hectare) park along Lake Michigan on the North Side of Chicago, Illinois. Named after US President Abraham Lincoln, it is the city's largest public park and stretches for seven miles (11 km) from Grand Avenue, on the south, to near Ardmore Avenue on the north, just north of the DuSable Lake Shore Drive terminus at Hollywood Avenue. Two museums and a zoo are located in the oldest part of the park between North Avenue and Diversey Parkway in the eponymous neighborhood. Further to the north, the park is characterized by parkland, beaches, recreational areas, nature reserves, and harbors. To the south, there is a more narrow strip of beaches east of Lake Shore Drive, almost to downtown. With 20 million visitors per year, Lincoln Park is the second-most-visited city park in the United States, behind Manhattan's Central Park.

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.