Six onion-roof towers supporting heavens

[Stefan Wirtz_2]

Personally, I believe there's a "tents" theme in the Rosettes page, as discussed by Ellie Velinska and You are not allowed to view links. Register or Login to view..

This is my rendering of how I read that detail from You are not allowed to view links. Register or Login to view.. Sorry for being somehow off-topic.

Yes, personally I see a baldachin or kind of market stand here. And three further tents which deserve this label in other roundels.

Theme of this thread are the center „towers“: to me, these are not towers at all, but clearly oriental-influenced, whatever they are - vessels are quite a good guess, even simple samowars or physical symbols.
And they don‘t „span“ the starry cover: the „tent“ roundels show enough spanning with ropes, but between „towers“ tips and those bulged rims is nothing.
In the castle roundel is also a kind of starred plain, and there is nothing like spanning as well.
I see those „star sheets“ and the streams from center roundel to some of the outer as the few abstract elements in a very solid and physical nap.

„Towers“ will seduce to count tower-like elements in all kinds of more-or-less interesting medieval cities, from the jerky Jerusalem idea (having nearly none valid christian symbols in whole VMS!) to Constantinople, Rome or whatever you like most. And going this far, it will not matter even if there are only five towers, or they are not centered, but spread over whole town, or not look any similar to those strange onion-pepper mills. 
After harshly discussing about merlons/swallowtails whose „exactness“ founded a strong belief into the „italian“ origin for more than 110 years now, quite an elegant way to ignore what can be seen here and continuing the hope into a „could-be“.
No, these are not some towers of Constantinople or Moscow..