I've only been through CDG twice, but it immediately struck me as the ugliest place in the world. As you arrive on the bus, it's like you're being transported to some dark, dank nuclear reactor building. Then, doors/gates where choosing a wrong one, even by a single digit, will take you to a very wrong place. Everything sort of in a 1960's "this might be trendy and cool" design, but which rapidly came to look outdated. And, can you believe it, people working at money changing/ticket issue/transportation desks, who don't speak *any* English, at all? or care to try and help you?
ugh.