Why use “yet” in this phrase?

I saw a billboard the other day advertising the House on the Rock. If you’ve been there, you know what it’s like. If you haven’t, perhaps you’ll make plans to go. Fans of American Gods know about it, thanks to Neil Gaiman’s interest in it. And yet …

The billboard exclaimed “AMAZING YET INDESCRIBABLE”.


Why use “yet” there? Isn’t it logical, sensible even, that something amazing could also be indescribable? Used as a conjunction, “yet” means “but” or “though.” “Amazing BUT indescribable”? “Amazing THOUGH indescribable”?

WHY? I must have pondered this for a good ten minutes or so after seeing the sign.

I still don’t have a good answer.