Updated: 23/08/2012 09:25 | By Hugh Wilson, contributor, MSN Him
The world’s greatest feats of engineering

Panama Canal

Panama Canal (© PA)
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When it opened in 1914, The Panama Canal linked the Atlantic and Pacific oceans and cut thousand of miles from a perilous sea voyage.

It's a brilliant piece of engineering. The sea level and high tides are different on each coast, so three enormous sets of locks had to be built into the design to raise or lower the canal between one end of its 48-mile course and the other. It was built to handle 80 million tonnes of shipping a year: today it handles three times as much.

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