Six onion-roof towers supporting heavens

[Bluetoes101]

Now, can you show me a real apothecary jar that is 100 meters tall? 

I think both things are probably wrong, neither is literal - Building or vessel.. I mean if you dip a toe in 15C alchemy a tower+vessel combo seeming to hold up the sky is not too hard to stumble on, it just depends how you look at what the drawer drew. Not implying it is alchemy-stuff, but I think it is more "story" than "map".