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the great pyramids of giza egypt
The three pyramids famous worldwide are located in Egypt, on the outskirts of Cairo. Egyptologists say that these amazing pieces of architecture are approximately 4,500 years old and they are currently considered the oldest monuments constructed in dressed masonry.The Great Pyramid, the complex’s largest structure, is 756 feet long and 450 feet high. For three millenniums, it was the highest structure in the world. 2,300,000 blocks of stone, each averaging 2 ½ tons in weight were used to raise t -
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great wall of china
the Great Wall has been rebuilt and maintained for more than 16 centuries. The wall stretches for 5,500 miles (8,851 km), including some natural defensive barriers such as hills and rivers.bricks and stone were used in the construction of the Great Wall, instead of rammed earth. In the Juyongguan pass, the wall reaches 25.6 feet (7.8 meters) in height and 16.4 feet (5 meters) in width. In some other areas, the wall climbs steep slopes and is completed by watchtowers built up to 3,215 feet (980 m -
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The Colosseum, Rome, Italy
Being 615 feet (189 meters) long and 510 feet (156 meters) wide, the outer wall of the Colosseum is estimated to have required at least 100,000 cubic meters of travertine stone. For such a colossal structure, the architects of the Colosseo used access methods similar to those used by the modern stadiums nowadays: more than 80 entrances at ground level were designed and each one was numbered, as was each staircase. -
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The Taj Mahal, Agra, India
made of marble with a height of 115 feet (35 meters). The top of the dome features a lotus design, which accentuates its height. This is also emphasized by tall decorative spires that extend from the edges of the base walls.
The central dome is surrounded by four smaller domed kiosks that replicate the center design and allow sunlight to aluminate the interior. The dome and the kiosks are topped by gilded finals. 130 feet (40 meters) tall minarets square the structure. -
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The Trans-Siberian Railway, Russia
Trans-Siberian Railway is 5,753 miles (9,259 kilometers) long, spanning over seven time zones The design of the route took ten years, since this railway was vital for Siberia’s economical development. Still, the project ignored many of the existing cities that demanded transport and many major Siberian cities remained unconnected. The workers involved in the project were mainly Russian soldiers and convicted laborers. -
Sep 25, 600
The Panama Canal
The Panama Canal is a 48 mile (77 kilometers) long ship canal that connects the Atlantic and the Pacific Oceans. More than 60,000,000 pounds (roughly 27,215,500 kilograms) of dynamite was used when constructing the canal. Since its inauguration, a total of 815,000 vessels have passed through the canal, making it one of the leading areas on Earth in terms of naval traffic. -
Sep 25, 700
The Hoover Dam, Arizona/Nevada, USA
The colossal structure is 726 feet (221 meters) high and 1,244 feet (379 meters) long at the top. Also, it is 660 feet (200 meters) thick at the base, narrowing up to 45 feet (14 meters) at the top. Each tunnel was 56 feet (17 meters) in diameter and their combined length reached 3 miles (5 kilometers). A total of 3,250,000 cubic yards (2,480,000 cubic meters) of concrete and 16,000 people -
Sep 25, 1000
Kansai Airport, Osaka, Japan
The construction of the 2.5 miles (4 kilometers) long and 1.6 miles (2.5 kilometers) wide island took 10 million work hours over three years. 10,000 workers and eighty ships were used to excavate 21,000,000 cubical meters of landfill. The whole project became the most expensive civil engineering work in the modern history, with a total cost of US$ 20 billion.
In its short existence, the airport has remained intact after a 6.8 earthquake with the epicenter located only 12 miles (20 kilometers) aw -
Sep 25, 1200
. Palm Islands, Dubai, UAE
completion, the new territory will add 320 miles (520 kilometers) of beaches to the city of Dubai.
The outer edge of the archipelago is actually a 10.5 miles (17 kilometers) long rock breakwater, made of over 7 million tons of rock. -
Sep 25, 1400
Qingdao Haiwan Bridge, Qingdao, China
total length of 26.4 miles (42.5 kilometers). Building this bridge cut the distance between the two cities by 19 miles (31 kilometers), reducing the travel time by 20 minutes (at a speed of 80 kilometers per hour).
The bridge `took four years and the daily work of 10,000 employees to build. It is designed as a six-lane expressway that will be resistant to earthquakes up to 8.0 on the Richter magnitude scale, typhoons and impacts of a 300,000 tons vessel. -
Burj Khalifa, Dubai, UAE
This is currently the tallest man-made structure ever built, measuring 2,717 feet (828 meters). US $1,5 billion and the skyscraper was officially opened on January 4th, 2010.
Burj Khalifa has 163 habitable floors, summing a floor area of 3,331,100 sq feet (309,473 sq meters). -
The Channel Tunnel, France/England
The Channel Tunnel is a 31.4 miles (50.5 kilometers) undersea tunnel that connects Folkestone, in the United Kingdom with Coquelles, in Northern France. The tunnel reaches up to 250 ft (75 meters) deep, and seven years after its opening it still possesses the largest underwater portion of any tunnel in the world: 23.5 miles (37.9 kilometers). It is now used by high-speed Eurostar passenger trains, Eurotunnel Shuttle vehicle transport and freight trains.
The tunnel consists of three bores: two 25
