I need an antonym to the word "Potemkin"

Potemkin (also known as Potemkin village)- Any hollow or false construct, a façade, physical or figurative, meant to hide an undesirable or potentially damaging situation.

I need a word exactly the opposite of this.

Or, a word for something that seems bad but is in fact a lie as well. Think patrick bateman I suppose? I need Potemkin and this new word to go together, like a pair. It doesn't have to be in english, in fact it would probably be better if it were in a different language. Thank you!