Massive!
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they need to build this its gorgeous
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One Pennsylvania Plaza scheme 1
869 feet, 1.5 million square feet
One Pennsylvania Plaza scheme 2
1,030 feet, 1.7 million square feet
One Pennsylvania Plaza scheme 3
804 feet, 1.4 million square feet
Lastly, a later scheme showing a taller version of the last scheme, with taller terraces on the north and south sides like what this project evolved to, the Comcast Center.
In 2004, this design was revealed with less limestone, and a short pyramid on top
In 2005, the final design was revealed at the groundbreaking
https://phillyskyline.com/bldgs/comcast/timeline/
Lots of information on this great site too
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Offshore skyscraper vision that look like round versions of 432 Park Ave.
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Made models of the design evolution. The two towers on the left are towers Comcast considered back in the 90’s on the site of One Meridian Plaza. Designed by Kling Lindquist
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Would be cool if that came to fruition! 
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Two different elevations of the American Commerce Center
And is anyone able to tell me ANY of the numbers/heights in the right. I can see the roof heights are 1,068 and 1,210 feet. I’m trying to extract information from this specific diagram above, but the quality it really low
Edit:
These could be the correct heights. I first placed the red lines onto the highlighted sections and noticed three of them are the same height. I also noticed the fourth section on the original diagram states a height of 15’6" for 11 floors, multiplied equals 171’6". I also went through many iterations of putting lines on my own model and lining it up with the diagram. I came to these conclusions, as the height of the 4th section also lined up perfectly on my model.
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everything good seems to get, no definitely, ALWAYS gets cancelled in Chicago 
It didn’t used to be like that. Chicago has lost its way.
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