Fort Dearborn followed by Chicago
Fort Dearborn was a United States fort, first built in 1803 beside the Chicago River, in what is now Chicago, Illinois. It was constructed by U.S. troops under Captain John Whistler and named in honor of Henry Dearborn, then United States Secretary of War. The original fort was destroyed following the Battle of Fort Dearborn during the War of 1812, and a replacement Fort Dearborn was constructed on the same site in 1816. By 1837, the fort had been de-commissioned.
Parts of the fort were lost to the widening of the Chicago River in 1855, and a fire in 1857. The last vestiges of Fort Dearborn were destroyed in the Great Chicago Fire of 1871. The site of the fort is now a Chicago Landmark, located in the Michigan–Wacker Historic District.