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Smilin’ Jack: The 3-million-gallon pumpkin lighting up California

Popkin
Oct 18, 2025
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Smilin’ Jack, the world’s largest jack o’lantern, a 3 million gallon oil refinery storage tank painted each Halloween to resemble a huge pumpkin. (Underawesternsky / Shutterstock.com)

A defunct gas storage tank has been cosplaying as a jack-o’-lantern for 72 years.

Smilin’ Jack—yes, they named it—sits at an old Phillips 66 refinery in Wilmington, Californ…

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