The tent-like spokes of the roof of DIA were supposed to suggest the mountains. I think they're quite ugly. And they let the rain in when it was first constructed, required more cost-overrun repairs. And the light bulbs up near the roof cost thousands of dollars to change every time, because it requires a cherry-picker-type crane to get up to where the burned out bulbs are.

Other than that, and the fact that it's ridiculously distant, surrounded by nothing, we're all getting used to it I guess.