The 7 Wonders of the World has traditionally been a list of 7 places recognized by the Ancient Greeks as being the most remarkable spots in their time.
Ever since that time, a number of lists have created about the "modern" 7 Wonders of the World. Truly the only list which actually stands out and has already stood the test of time for over 10 years is the 7 Wonders of the Modern World, introduced by the American Society of Civil Engineers.
Empire State Building - Completed around 1931, this towers 1,250 feet above New York City. This has been the tallest building in the world, up until the 1st tower of the World Trade Center was completed in 1972.
Itaipu Dam - Constructed by Brazil and Paraguay around the Paraná River, this dam is considered the world's biggest hydroelectric power plant. Finished in 1991, this took sixteen years in order to construct the number of dams in whose length sum up around 7,744 meters. This was actually 15x more concrete compared to the Channel Tunnel.
CN Tower - Around 1976, the tower was crowned the world's highest free standing building. This looms around 1/3 of the mile high (1,815 ft) on top of Toronto, Canada. The glass floor in the observation deck allows you to view 342 meters below the ground.
Panama Canal - This had taken 34 years to develop this 50-mile-long channel along the Isthmus of Panama. The volume of excavating needed as well as the dimensions of its locks make it the costliest development in American history in that time and also one of the most deadly: around 80,000 individuals died throughout the period of construction (most out of illness).
Channel Tunnel - Often called the Chunnel, this connects France and England. It's 31 miles in length, and 23 of the miles are 150 feet below the sea bed of the English Channel. High-speed trains travel within its side-by-side tubes.
Netherlands North Sea Protection Works - Since the Netherlands is beneath sea level, a number of dams, floodgates, as well as surge barriers have actually been constructed to help keep the sea from surging the region at the time of storms. The largest area of the project was a 2-mile-long moveable surge barrier around an estuary completed in 1986. It's constructed out of 65 concrete piers each one with a weight of 18,000 tons. It is claimed that this project is almost the same in scale to that of the Great Wall of China.
Golden Gate Bridge - Linking San Francisco as well as Marin County in 1937, for several years it was the longest suspension bridge around the world. Professionals considered that wind gusts, ocean currents, as well as fog will make it unrealistic to construct. This took about 4 years to finish the gorgeous 1.2-mile-long bridge. It's retained by 80,000 miles worth of steel wire, and also the cables which connect the 2 towers are around 36.5 inches in diameter - the largest ever produced.
The "New" 7 Wonders of the World
In July 7, 2007, an institution introduced a "new" group of the 7 Wonders of the World according to online voting from around the globe...
Chichen Itza, Mexico - Mayan City
Christ Redeemer, Brazil - Large Statue
The Great Wall, China
Machu Picchu, Peru
Petra, Jordan - Ancient City
The Roman Colosseum, Italy
The Taj Mahal, India
7 Natural Wonders of the World
Around 1997, CNN introduced a list of the 7 Natural Wonders of the World... Here are they: