Knowledge (XXG)

Portal:Illinois/Selected picture/1

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32: 21: 42:(formerly the Sears Tower), the world's largest building from 1973 to 2004. The tower's innovative 51: 58: 43: 17: 47: 39: 31: 30: 8: 7: 28: 1: 75: 44:bundled tube structure 35: 34: 36: 61: 66: 56: 46:was designed by 22:Selected picture 74: 73: 69: 68: 67: 65: 64: 63: 62: 55: 37: 26: 25: 24: 18:Portal:Illinois 12: 11: 5: 72: 70: 57:Photo credit: 29: 27: 15: 14: 13: 10: 9: 6: 4: 3: 2: 71: 60: 53: 49: 45: 41: 33: 23: 19: 48:Bruce Graham 40:Willis Tower 59:Soakologist 52:Fazlur Khan 20:‎ | 16:< 50:and 38:The 54:.

Index

Portal:Illinois
Selected picture

Willis Tower
bundled tube structure
Bruce Graham
Fazlur Khan
Soakologist

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