In “The Dark Knight” (2008), the Joker's semi-truck flips over on LaSalle Street, in the heart of downtown Chicago.
In 1900, engineers reversed the flow of the Chicago River to push sewage away from Lake Michigan, the city's drinking-water source.
The Green Mill, in Uptown since 1907: a former Capone-era speakeasy where you can still hear jazz from the gangster's favorite booth.