Retro + faux, something which references a fake/non-existent past. Used to describe an object or especially a place/area which is made to evoke a version of the past which only ever existed in popular imagination and not in reality.
"
Meh, that Wild West theme park was totally retreaux"
"How so?"
"I'm pretty sure not everyone in those days had to choose between being a
cowboy,
outlaw,
grizzled old prospector, or working in a saloon."
