Sears Tower: New glass 'ledges' lead to high anxiety -- chicagotribune.com.
Three layers of half-inch-thick glass were all that separated me from what looked like Matchbox cars and tiny people about 100 stories below. My stomach was queasy, and my heart pounded. But the view from this glass box -- about the size of an elevator -- was breathtaking and terrifying, especially for someone who fears heights.
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