Yes, there REALLY is a REAL metal metroplis, and it lies in a small valley,on the actual planet Metallica.
You would be correct to assume it is a planet made entirely of metal.
This is an image of the dawn light risng over it.
Where, might you ask, does the planet Metallica lie in our Universe?
Ah, only in Incendia, Virtual Painter Collage, and my over vivid imagination, I fear :):):):)
But it is still very real even in there :):):)