Mississippi river - Chicago

The Mississippi River is the second longest river in the United States, with a length of 2,340 miles (3,770 km) from its source in Lake Itasca in Minnesota to its mouth in the Gulf of Mexico. The longest river, a Mississippi tributary, is the Missouri River measuring 2,540 miles (4,090 km).
The Mississippi River is part of the Jefferson-Missouri-Mississippi river system, which is the largest river system in North America and among the largest in the world: by length (3,900 miles (6,300 km)), it is the fourth longest, and by its average discharge of 572,000 cu ft/s (16,200 m³/s), it is the tenth largest river.

(from wikipedia)

Lake Michigan - Chicago

Lake Michigan is one of the five Great Lakes of North America, and the only one located entirely within the United States. It is bounded, from west to east, by the U.S. states of Wisconsin, Illinois, Indiana, and Michigan. The word "Michigan" was originally used to refer to the lake itself, and is believed to come from the Ojibwa Indian word mishigami, meaning "great water." The lake is slightly larger than the country of Croatia.

(from wikipedia)

Washington park - Chicago

Washington Park is a 1.5 km² park between Cottage Grove Avenue and Martin Luther King Boulevard. It was named for President George Washington in 1880.Washington Park is the largest of 4 Chicago Park District parks named after persons surnamed Washington. This park is the proposed site of the Olympic Stadium for Chicago's bid to host the 2016 Summer Olympics. Washington Park was added to the National Register of Historic Places on August 20, 2004.