As a factory worker for most of his life, George Ciardi has always had an affinity for the "accidental artistry" of the places where he worked. "It's all this functionality that ends up being beautiful in odd ways," he says. Ciardi took a job as a courier two and a half years ago, but stuck in a car all day, he soon felt "visually frustrated" and missed the rhythm of factory life. That all changed when he began seeing the old buildings he delivered packages to in a different light.

"My job takes me to all these great locations," Ciardi says. "So I started writing down the places that might be promiq sing and going back at night with my camera."

The spooky colors in Ciardi's images are provided by the buildings' own outdoor lighting. The yellowish hues come from sodium vapor lights, while mercury vapor...