The seven wonders of the ancient world were a testament to what humans could do. Most of them no longer exist but humans have achieved so much more in the centuries that have passed. So many amazing feats of structural engineering appear all over the world. Here are just four of the most amazing marvels that exist today.
- The Channel Tunnel. Often referred to as the “chunnel,” this feat of modern engineering was completed in 1994 after over six years of construction. The chunnel carries high speed passenger trains, car carrying shuttles, and freight trains. At the lowest point, the chunnel is 250 feet deep. It runs under the English channel between Kent in the U.K. and Calais in northern France. While the chunnel hasn’t been without its problems it remains one of the greatest successes in modern engineering.
- The CN Tower. CN, which originally stood for the train company Canadian National, is a concrete observation and communications tower in downtown Toronto, Ontario. When it was completed in 1976 it was the world’s tallest freestanding structure and the tallest tower. It was named one of the modern 7 wonders of the world by the American Society of Civil Engineers and still holds a historic place in the World Federation of Great Towers.
- The Empire State Building. Iconic from Hollywood movies such as Sleepless in Seattle and King Kong, this art deco building was constructed in 1931. It currently is the countries 4th tallest building. The Empire State Building is also the tallest LEED certified building in the U.S.
- The Golden Gate Bridge. Construction on one of the most recognizable structures in the United States was completed in 1937. This bridge was the world’s largest suspension span measuring 4200 feet until a bridge in New York was opened in the late 1960s. Several other suspension bridges have been built that are longer, but no one can deny the Golden Gate Bridge’s place in American history.
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