Chicago
Weird Science isn't usually filed next to Ferris Bueller or The Breakfast Club in the "serious John Hughes" conversation — it's the one where two underachieving teenagers hack into a computer and build themselves a fully-grown, reality-bending woman, and most of the plot is an excuse for 1985-grade special effects. But strip away the premise and it's shot almost exactly like the rest of this series: real North Shore houses, a real mall, and a Skokie high school this site has already mapped once before, under a different movie's name.
Northbrook Court Shopping Mall
This is the best-documented location in the whole film, because the production didn't just shoot here — the movie's own end credits thank Northbrook Court Mall by name, alongside the City of Highland Park. The AFI's own catalog entry backs up the specifics: principal photography started here on October 2, 1984 (pushed back a week from an original September 24 start date in Skokie), and the mall is where Ian and Max first run into Lisa, meeting her outside the entrance on the shopping center's southeast side. Northbrook Court is still an operating mall today, and John Hughes himself grew up in Northbrook — this isn't a location scout finding a convenient suburb, it's Hughes shooting a few miles from his own childhood house.
Shermer High School (Again)
If this address looks familiar, it's because this series already mapped it: the Sixteen Candles guide confirms Niles East High School, at this exact address, as that film's Shermer High exterior. Weird Science reuses the same real school, under the same fictional town name Hughes had already invented a year earlier. Niles East closed after the 1979–80 school year and was largely demolished in the early 1990s; Oakton College's Skokie campus (the Ray Hartstein Campus) now sits on the same 21-acre lot, carrying the same street address the high school used to have.
The pattern repeats: this is the third guide in this series to find a closed or repurposed North Shore school standing in for a fictional Shermer, Illinois — after Niles East (Sixteen Candles) and the former Maine North (The Breakfast Club). Hughes kept writing the same town; the production kept finding real empty schools to shoot it in.
Three Houses on Two Streets in Highland Park
The teenage-bedroom-turned-laboratory scenes, and the rest of the film's suburban exteriors, were shot on real residential streets in Highland Park. A Highland Park film-locations page (part of Visit Lake County's own tourism site) and an independent fan-run 80s-film-locations archive agree on three addresses: Gary's house at 1200 Linden Avenue, Deb's house at 1150 Linden Avenue, and Wyatt's house — where most of the movie actually happens — at 280 Cedar Avenue.
One of the three is gone: the house used for Wyatt's, at 280 Cedar Avenue, has since been torn down and replaced with a different structure, per both sources above. The address is real and still maps to a real lot in Highland Park; the house in the movie isn't the house standing there now. Gary's and Deb's houses on Linden Avenue don't carry that same caveat in either source, though neither is independently confirmed beyond this one pair of location guides — treat the Linden Avenue addresses as well-sourced but not bulletproof the way the mall and the school are.
The movie's own end credits thank a shopping mall. That's about as confirmed as a filming location gets.
A Few Other Names, No Address Attached
Production notes and secondary coverage mention several other Chicago-area suburbs connected to the shoot — Skokie as the original (later relocated) starting point, plus general references to filming "outside Chicago" beyond what's listed above. None of those come with a specific building or address confirmed enough to pin on a map, so they're not included here. Three weeks of location work in the Chicago suburbs is also all the film got: the rest of production, including most of the special-effects-heavy interior work, was finished on sound stages and the backlot at Universal City Studios in Los Angeles.
The Hughes Connection, Again
By 1985, this was Hughes's fourth film written and/or directed inside of two years, and the third in a row shot substantially in his own home turf — he attended Glenbrook North High School in neighboring Northbrook, the same real building this series already confirmed as a genuine Ferris Bueller's Day Off filming location (not reused here; Weird Science's own school scenes went to Niles East instead). It's a small, specific kind of hometown loyalty: four movies, one writer, and a search radius that barely leaves the North Shore. One more detail worth a footnote: a 19-year-old Robert Downey Jr. plays Ian, a few years before anyone outside this cast knew his name.
The Completionist Checklist
For anyone tracing this one in person: Northbrook Court Mall, still operating; the former Niles East High School site in Skokie, now Oakton College, already familiar from the Sixteen Candles guide; and three house addresses on Linden and Cedar Avenues in Highland Park, one of which no longer has the actual house from the film standing on it. Five real stops, two of them already doing double duty elsewhere in this series.
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