What is the tallest building in the city known as the Second City and the Windy City?
Willis Tower
The Willis Tower
The Willis Tower
The Willis Tower
One Prudential Plaza
Willis Tower
Sears Tower
One Magnificent Mile
The Willis Tower
One Prudential Plaza
Willis Tower
One Magnificent Mile
One Prudential Plaza
Sears Tower
AT&T Plaza
The Willis Tower
Willis Tower
AT&T Building
One Magnificent Mile
One Prudential Plaza
AT&T Plaza
AT&T Building
Willis Tower
Sears Tower
The Willis Tower
One Magnificent Mile
One Prudential Plaza
AT&T Plaza
Crain Communications Building
One Chicago Center
AT&T Building
One Magnificent Mile
Willis Tower
One Prudential Plaza
AT&T Plaza
One Museum Park
Sears Tower
The Willis Tower
One Chicago Center
AT&T Tower
AT&T Building
Crain Communications Building
Chicago Tribune Tower
One Magnificent Mile
AT&T Plaza
One Prudential Plaza
One Museum Park
Willis Tower
John Hancock Center
One Chicago Center
Sears Tower
The Willis Tower
One Prudential Center
One Magnificent Mile
One Museum Park
AT&T Building
AT&T Plaza
Willis Tower
AT&T Center
One Prudential Plaza
AT&T Tower
One Chicago Center
Crain Communications Building
John Hancock Center
One Museum Park
One Prudential Center
One Magnificent Mile
AT&T Building
AT&T Plaza
AT&T Center
One Prudential Plaza
One Chicago Center
Sears Tower
The Willis Tower
Willis Tower
Chicago Tribune Tower
One Museum Park
AT&T Tower
One Prudential Center
One Magnificent Mile
AT&T Plaza
AT&T Center
One Chicago Center
One Prudential Plaza
AT&T Building
The Willis Towers
John Hancock Center
Willis Tower
Crain Communications Building
Aon Center
Guaranteed Rate Field
Sears Tower
The Willis Tower
The Willis Tower Chicago
One Chicago Center
One Prudential Center
AT&T Plaza
AT&T Center
One Museum Park
Sears Tower Chicago
One Prudential Plaza
One Magnificent Mile
AT&T Building
AT&T Tower
Trump Tower
Willis Tower
AT&T Plaza Building
Guaranteed Rate Field
Crain Communications Building
Chicago Tribune Tower
AT&T Plaza
The Willis Towers
One Prudential Center
John Hancock Center
Sears Tower
Aon Center
One Prudential Plaza
The Willis Tower
AT&T Building
One Chicago Center
AT&T Center
One Museum Park
Willis Tower
One Magnificent Mile
AT&T Plaza Building
Trump Tower
The Willis Tower Chicago
AT&T Tower
Sears Tower Chicago
AT&T Plaza
One Chicago Center
One Prudential Plaza
AT&T Center
One Prudential Center
Willis Tower
Crain Communications Building
AT&T Building
One Museum Park
AT&T Plaza Building
John Hancock Center
Sears Tower
The Willis Towers
Chicago Tribune Tower
One Magnificent Mile
The Willis Tower
Aon Center
Chicago Skyway
Trump Tower
AT&T Plaza Tower
AT&T Plaza
Crain Communications Center
Willis Tower
One Prudential Plaza
One Prudential Center
AT&T Tower
One Chicago Center
AT&T Center
AT&T Plaza Building
AT&T Building
Trump Tower
Crain Communications Building
One Museum Park
Chicago Tribune Tower
One Magnificent Mile
The Willis Tower
AT&T Plaza
AT&T Plaza Tower
Aon Center
Chicago Skyway
Sears Tower
The Willis Towers
Willis Tower
AT&T Corporate Center
One Prudential Plaza
One Chicago Center
John Hancock Center
Chicago Tribune Building
AT&T Center
One Prudential Center
Guaranteed Rate Building
AT&T Plaza Building
AT&T Building
AT&T Tower
Trump Tower
Chicago Sky Building
AT&T Plaza
AT&T Plaza Tower
Crain Communications Building
One Museum Park
Willis Tower
Aon Center
Chicago Skyway
One Prudential Plaza
The Willis Tower
The Willis Towers
One Prudential Center
Sears Tower
AT&T Plaza Building
AT&T Center
Guaranteed Rate Headquarters
Trump Tower Chicago