Skyscrapers including the Aon Center viewed from Millennium Park, Chicago, Illinois, United States of America, North America

Night shot, Willis Tower, formerly named Sears Tower, 311 South Wacker, John Hancock Center, Aon Center, 77 West Wacker Drive, Two Prudential Plaza, Smurfit-Stone Building, Trump International Tower, skyscrapers, skyline, Lake Michigan, Chicago, Illinois,

Night shot, Willis Tower, formerly named Sears Tower and renamed in 2009, Trump Tower, Aon Center, Two Prudential Plaza, Chicago, Illinois, United States of America, USA

Dawn, Willis Tower, formerly the Sears Tower, 311 South Wacker, John Hancock Center, Aon Center, 77 West Wacker Drive, Two Prudential Plaza, Smurfit-Stone Building, Trump International Tower, skyscrapers on the skyline, Lake Michigan, Chicago, Illinois, U

Foggy atmosphere in the early morning, 311 South Wacker, John Hancock Center, Aon Center, 77 West Wacker Drive, Two Prudential Plaza, Smurfit-Stone Building, Trump International Tower, skyscrapers, skyline, Lake Michigan, Chicago, Illinois, United States

Night shot, Willis Tower, formerly named Sears Tower and renamed in 2009, 311 South Wacker Drive skyscraper, John Hancock Center, Aon Center, Two Prudential Plaza, Trump Tower, skyline, Lake Michigan, Chicago, Illinois, United States of America, USA

Buckingham Fountain, Grant Park, skyline with Willis Tower at the back, formerly named Sears Tower, CNA Center, Legacy at Millennium Park Building, Two Prudential Plaza, Smurfit-Stone Building, Metropolitan Tower, Aon Center, Chicago, Illinois, United Sta

Night shot, Aon Center, Two Prudential Plaza, Willis Tower, the former Sears Tower, skyline, Lake Michigan, full moon, Chicago, Illinois, United States of America, USA, North America

Skyline, skyscrapers, Willis Tower, formerly Sears Tower, 311 South Wacker, John Hancock Center, Aon Center, 77 West Wacker Drive, Two Prudential Plaza, Smurfit-Stone Building, Trump International Tower, dusk, Lake Michigan, Chicago, Illinois, United Stat

Night shot, Willis Tower, formerly named Sears Tower, 311 South Wacker, John Hancock Center, Aon Center, Two Prudential Plaza, Smurfit-Stone Building, Trump International Tower, skyscrapers, skyline, Lake Michigan, Chicago, Illinois, United States of Amer

Skyline and Lake Michigan shore before sunset as seen from John Hancock, Chicago, Illinois, USA

Panorama of the Skyline of downtown Chicago as seen from John Hancock, Illinois, USA

Night shot, Willis Tower, formerly named Sears Tower, 311 South Wacker, John Hancock Center, Aon Center, 77 West Wacker Drive, Two Prudential Plaza, Smurfit-Stone Building, Trump International Tower, skyscrapers, skyline, Lake Michigan, Chicago, Illinois,

John G. Shedd Aquarium and Ocean Aquarium at sunrise, Lake Michigan, Willis Tower, formerly named Sears Tower, 311 South Wacker, John Hancock Center, Aon Center, Two Prudential Plaza, Smurfit-Stone Building, Trump International Tower, skyscrapers, skyline

View of the Two Prudential Plaza, the Aon Center, the Tribune Tower and the Wrigley Building, Chicago, Illinois, United States of America, USA

Navy Pier amusement park seen from Lake Michigan in front of the skyline with the John Hancock Center and the Aon Building, Chicago, Illinois, United States of America, USA

Panoramic photograph, evening mood, Willis Tower, formerly named Sears Tower and renamed in 2009, 311 South Wacker Drive skyscraper, John Hancock Center, Aon Center, Two Prudential Plaza, Trump Tower, skyline, Lake Michigan, Chicago, Illinois, United Stat

Night shot, Aon Center, Two Prudential Plaza, John Hancock Center, Diamond Tower, skyline, Lake Michigan, Chicago, Illinois, United States of America, USA

Foggy atmosphere after sunrise, 311 South Wacker, Aon Center, 77 West Wacker Drive, skyline, Legacy at Millennium Park, CNA Center, skyscrapers, Lake Michigan, Chicago, Illinois, United States of America, USA

View of the Willis Tower, formerly named Sears Tower and renamed in 2009, Trump International Hotel and Tower, the Two Prudential Plaza, the Aon Center, the Tribune Tower and the Wrigley Building, Chicago, Illinois, United States of America, USA

Night shot, Aon Center, Two Prudential Plaza, Trump Tower, Diamond Tower, skyline, Lake Michigan, Chicago, Illinois, United States of America, USA

Night shot, Trump Tower, Wrigley Building, Aon Center, Two Prudential Plaza, Chicago, Illinois, United States of America, USA

Looking north towards Two Prudential Plaza, Aon Center, Tribune Tower, Wrigley Building skyscrapers, Chicago, Illinois, United States of America, USA

Low angle view of skyscrapers in a city, Aon Center and Two Prudential Plaza, Chicago, Illinois, USA

Low angle view of a building in a city, Two Prudential Plaza, Aon Center, Chicago, Illinois, USA

USA, Illinois, Chicago, AON Center, Aqua Building and Prudential Building in downtown district

Pritzker Pavilion in Millennium Park Chicago Illinois USA

USA, Illinois, Chicago skyline

USA, Illinois, Chicago skyline at dusk

Pritzker Pavilion at Millennium Park Chicago Illinois USA

Pritzker Pavilion Chicago Illinois USA

USA, Illinois, Chicago, City skyline over Lake Michigan

USA, Illinois, Chicago skyline at dusk