David Childs redesigns halted towers for Chicago Spire site

SOM's David Childs has updated the design of a pair of towers proposed to occupy the site of Santiago Calatrava's Chicago Spire.
The amended plans come over a year after Chicago vice mayor Brendan Reilly halted Childs' proposal for the "sister skyscrapers" on 400 Lake Shore Drive.
The redesign alters the height of the two towers that make up the complex. The South Tower is reduced to a height of 765 feet (233 metres) from 1,100 feet (335 metres). The shorter and slightly wider North Tower rises