Not much to say about this one.  That's the Prudential Building.  If you doubt me, read the sign at the top.  It was completed in 1955--the first skyscraper built in Chicago following the Great Depression.  I am standing in Millennium Park's Lurie Garden.  There is still a surprising amount of wild grass and plantings in the garden's beds.  

No tricks on this one.  That's what the sky looked like.  I appreciated the red lighting on the second Prudential tower immediately behind the 41-story original one.