As far as Terminal1 is concerned, I fully agree with Conty up there.
It looks more like the average British multi-storey car park you'd get in Wolverhampton or something-horrible, ugly concrete, similar to what is on offer at Seattle's Sea-Tac....
My vote goes to Helsinki's Vantaa; very airy, plenty of windows to let the light in (or what little you get in HEL winter), and being able to see my aircraft on-stand from the check-in desks is wicked!
Manchester isn't too bad either, but it tends to get crowded at rush-hour.
Cape Town is probably one of my favourites-sunny, warm weather (mostly), great scenery and lots of jumbo's parked right up at the terminal window (no airbridges either-yay).