Tourists panic as cracks appear in 400m-high glass walkway

The Garibay family from California was on the glass 'Ledge' on the 103rd floor of the Willis Tower when they heard a cracking sound and saw splintering of the glass.

Fortunately, it later turned out to be only the deck's protective coating that had cracked and the three-inch structural glass remained intact.

The Ledge was temporarily closed while the coating was replaced and a full inspection was carried out. The rest of the Skydeck visitor area remained open.

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