Though it is a pain (especially in terminal 1) FRA is gourgous inside and out with its bare metal theme and the beautiful Lufthansa designs and mirror stainless steel outside. Kansai in Osaka is considered an architectural marvel (not just because of the sinking island, but the terminal design). While I love LAX, the only cool looking thing about it is the tower and its compact layout. DIA in all its massiveness is cool, along with the windmill runway formation