All of CLE
except the D concourse.
I'm with you, Mike, bulldozers are the best remedy for DTW
's Smith terminal.
's landside facade is clunky, perhaps they could build some kind of atrium over the road-facing baggage claim area. The airside facade is clunky too, though, but it's all the butt-end of stores in the concession mall, so improving it would probably involve substantial reconfiguration of the mall.
's landside concession area is dark and dingy. Its older concourses are narrow and dark. The concourses are slated to be widened, but I don't know about the concession area.
's C-D concourse, which our intrepid UA744Flagship has dubbed "the giant jetway." That has to be *the* ugliest airline hub terminal in the US. I've never been to MEM
, though, and many others have echoed Gnomon's view of the place.
KBUF--I remember ATL
's old terminal too, a real hodgepodge of '60s and '70s institutional blah. How about BUF
's old East Terminal? Oy vey.