In this beautiful capture by Tom Gill, we see a silhouette of the Chicago skyline as seen from the top of a tall dune at the Indiana Dunes National Lakeshore.

The national lakeshore runs for nearly 25 miles (40 km) along the southern shore of Lake Michigan, from Griffith, Indiana, on the west to Michigan City, Indiana on the east. The park contains approximately 15,000 acres (6,100 ha).

Chicago, a city in the U.S. state of Illinois, is the third most populous city in the United States.