The Sky Bridge at Chicago's Willis Tower allows tourists to stand on a glass platform, 103 stories above the streets. When the glass began to make cracking noises, the thrilling experience suddenly turned terrifying for a group of visitors
The Sky Bridge at Chicago's Willis Tower allows tourists to stand on a glass platform, 103 stories above the streets. When the glass began to make cracking noises, the thrilling experience suddenly turned terrifying for a group of visitors. Dean Reynolds reports.
