As this is MOTD and I never commented on this, I shall do so now. This building is significant and special to me, as my wife has left many footsteps here. The first foreign trip we made together was me visiting her while she was living in Florence, doing research. We climbed Giotto's bell tower then. MOCwise, I think you have the shape down pretty well. The only thing I'm missing is the (dark) green marble.
"HOLY SNOT" is right Shannon,You know Arthur, I used to have dreams of being a lego artist but when I see these landmarks and the skill put into them I just give up. They are just so magnificent! I see you in Brick Journal!
P.S. You should do a miniscale of the Frank Loyd Wright-Mile high tower, but depending on your scale, even a mini scale of that tower would be Huge!
Arthur, your work is nothing shy of artistry. I visit your home page often to see your work, but it's always a good day when a new creation of yours graces us on Mocpages or Brickshelf! Thanks for sharing!