SF: Salesforce Tower, etc.

https://www.youtube.com/watch?v=r4ZTHUmcW-A

https://thefrontsteps.files.wordpress.com/2017/04/salesforce-tower-renderings-1a.jpg?w=1024&h=562 , https://thefrontsteps.com/2017/04/10/the-best-of-salesforce-tower-rising-including-time-lapse/salesforce-tower-renderings-1a

http://www.structuremag.org/wp-content/uploads/2017/05/0617-f-sft-2.jpg , http://www.structuremag.org/?p=11635

http://www.ctbuh.org/News/GlobalTallNews/tabid/4810/Article/5669/language/en-US/view.aspx

https://www.youtube.com/watch?v=NftCZMfoJFg views
https://www.youtube.com/watch?v=2R0j5bqsWXg SFT