National Geographic: Megastructures - Kansai International Airport

Kansai International Airport is an international airport located on an artificial island in the middle of Osaka Bay, 38 km (24 mi) southwest of Ōsaka Station, located within three municipalities, including Izumisano, Sennan (south),and Tajiri (central), in Osaka Prefecture, Japan. The airport is off the Honshu shore. The airport serves as an international hub for All Nippon Airways, Japan Airlines, and Nippon Cargo Airlines, and also serves as a hub for Peach, the first international low-cost carrier in Japan.

More info:

https://en.wikipedia.org/wiki/Kansai_International_Airport