Which US city did the 1929 saint valentine's day massacre take place?

The 1929 Saint Valentine's Day Massacre took place in Chicago, Illinois. It was a notorious gangland shooting that resulted in the deaths of seven members of the North Side Gang, attributed to a conflict with the South Side Italian gang led by Al Capone. The incident highlighted the violent turf wars during the Prohibition era and had a significant impact on organized crime in the city.