Frankfurt Airport, the worst
So far, I think that Frankfurt Airport is the worst that I’ve ever been. The ventilation pipes are visible. The smoking area is only a kiosk with ash trays. The smoke is not extracted properly and you can smell it all around. The security is a bit too physical for my taste. They do not have the walk through (door-frame) metal detector. They use a portable metal detector and palpate you a bit too much. They could have put more walk-through metal detectors. Some signs do not work. It seems to be undergoing some renovations.
Paille-en-queue in Frankfurt Airport

Munich airport is much better (no palpation, no smoking areas) and has even a sex shop in the terminal. No kidding!.

Eddy Young said,
August 28, 2007 @ 8:24 am
The sex shop is handy if you want to join the Mile-High Club in style!
— Eddy