Wikimedia Commons | Crain's Philadelphia
Photo Credit URL: 
https://de.wikipedia.org/wiki/Wells_Fargo_Center_%28Philadelphia%29#/media/File:Wells_Fargo_Center_2012-02-06.jpg
Image: 
Photographer: 
Dphilmore
Photographer URL: 
https://commons.wikimedia.org/w/index.php?title=User:Dphilmore&action=edit&redlink=1
Attribution Type: 
Creative Commons Attribution-Share Alike 3.0 Unported
Attribution Type URL: 
https://creativecommons.org/licenses/by-sa/3.0/legalcode