Halloween H20: 20 Years Later filmed at Main Street, La Puente. This street plays the fictional small town of Summer Glen in the film. On screen it's Summer Glen.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
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Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in La Puente and it tells you what was shot around you, how to get there, and whether you can actually go in.
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