Towns & cities
Belleville
City in and seat of St. Clair County, Illinois, United States
Wikipedia names Belleville as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in Belleville. Each title’s page links to the sentence that says so.
In the Heat of the NightMystery film1967
Filming locations nearby
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Towns & cities O'Fallon
United States · 11 km north-east
City in St. Clair County, Illinois, United States
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Towns & cities
Freeburg
United States · 13 km south-east
Human settlement in Illinois, United States of America
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Towns & cities Metro East
United States · 16 km north
Suburbs of St. Louis in Illinois
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Towns & cities
East St. Louis
United States · 18 km north-west
City in St. Clair County, Illinois, United States
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Streets & squares
Eads Bridge
United States · 19 km north-west
Bridge spanning the Mississippi River in St. Louis, Missouri
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Landscapes & nature
Gateway Arch
United States · 20 km north-west
Monument in St. Louis, Missouri