Located at the National Portage Historic Site
The Chicago Portage was a significant factor in the development of United States interior. The Chicago Portage is the low and short divide between the Great Lakes and the Mississippi River systems. It has been described as one the keys to the continent. Explorers Marquette and Joliet first crossed the Chicago Portage in 1673. One of the most important travel routes of the mid-century, the portage was significant factor in the development of United States interiors.