![](http://2.bp.blogspot.com/_nbq2z7LV5VM/SUn8DDoK5EI/AAAAAAAAAqI/7wf5_J9fjQ8/s320/F-The+Kansai+International+Airport.jpg)
Dear Koji,
The Kansai International Airport has a single four-story
terminal which is the longest airport terminal in the world
with a total length of 1.7 km from end to end. The
terminal's roof has the shape of a wing as seen in
cross-section to help air circulation through the building.
Best.
R