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Why was Kansai International Airport built on a man-made island?
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Ōsaka-Kōbe metropolitan area
Shrine in Kōbe, Japan.
Kansai International Airport was constructed on a man-made island in Ōsaka Bay primarily to mitigate noise pollution for residents on the mainland. By locating the facility offshore, authorities were able to facilitate 24-hour airport operations without the restrictions typically imposed by proximity to densely populated urban areas.1