Trump International Hotel and Tower, Prudential Plaza, 2 Prudential Plaza, Aon Center and Blue Cross Blue Shield Building helps make up Chicago's...
South view of the Art Institute Complex from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House...
Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in Chicago, Illinois on OCTOBER 17, 2015.
Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in Chicago, Illinois on OCTOBER 17, 2015.
Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in Chicago, Illinois on OCTOBER 17, 2015.
Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in Chicago, Illinois on OCTOBER 17, 2015.
Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in Chicago, Illinois on OCTOBER 17, 2015.
North view of Chicago from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in...
An East view of Navy Pier from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015'...
North view of Chicago from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in...
North view of Trump International Hotel And Tower from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's...
An East view of Navy Pier from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015'...
North view of Chicago from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in...
North view of Chicago from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in...
North view of Chicago from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in...
An East view of Navy Pier from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015'...
South view of Frank Gehry's Pritzker Pavilion from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open...
South view of Chicago from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in...
South view of Chicago from the 71st floor of the Aon Center, photographed during the Chicago Architecture Foundation's 'Open House Chicago 2015' in...