:quality(70)/arc-anglerfish-arc2-prod-tronc.s3.amazonaws.com/public/ULEFNQZ5V5HMXNEJ4IOCVZL7YU.jpg "Tourist attraction The Ledge at Willis Tower reopens after protective coating cracks 103 floors up – Chicago Tribune")
Tourist attraction The Ledge at Willis Tower reopens after protective coating cracks 103 floors up – Chicago Tribune
Toronto - CN Tower: Entry Pavilion, Plaza, Renos | ?m | ?s | CLC | IBI Group | Page 76 | UrbanToronto
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Willis Tower's glass floor CRACKS under tourists' feet | Daily Mail Online
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