The Chicago skyline, with its iconic skyscrapers, comes alive at night. The city lights twinkle ... From the Willis Tower to the John Hancock Center, the skyline is a testament to human ingenuity ...

formerly known as Sears Tower, which is one of the largest skyscrapers in the world. The 110-story building became part of the iconic Chicago skyline in 1973. The broadcast antennas were added in ...