7 Wonders of the Modern Worldby Dan Steckenberg
People have put together many lists of the Seven Ancient Wonders of the World. But this "seven wonders" list celebrates monumental engineering and construction feats of the 20th century. It was chosen by the American Society of Civil Engineers in 1994.
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Empire State Building
Finished in 1931, the Empire State Building towers 1,250 ft over New York City. Until the first tower of the World Trade Center was finished in 1972, it was the world's tallest building. After September 11, 2001, it once again became the tallest building in New York City.
NexT: Itaipu Dam