??Palm Island (Dubai) Palm Island is piled up by 100 million cubic meters of rocks and sands. A total number of 210 million cubic meters of rock, sand, limestone were dug up for the re-construction of these islands, of which only the outer ring took up 10 million cubic meters of rocks. These rocks are transported over throughout the United Arab Emirates from 16 quarries, and these materials may be sufficient to build a fence around the earth three times. The construction was completed on September 24, 2008. (Source: people.com.cn) 
??Serbia waterway (Spain) The waterway is the best-preserved monuments in Iberian Peninsula. It features 44 double bridges and 79 single arches, a total of 167. It was built in the Roman Trajan era and is still in use today. Every arch is higher than 9 meters. The waterway was built in AD 50. (Source: people.com.cn) 
??The Great Wall (China) The Great Wall is as long as 8,850 kilometers. Built in 475 BC and reconstructed in the Ming Dynasty (1368 – 1644), the Great Wall was added with towers, battlements, artillery in the make-over, which are even up to 980 meters above sea level. You cannot imagine that the adhesive material for cement stone was actually glutinous rice flour. Completion time is 204 BC. (Source: people.com.cn) 
??Taj Mahal (India Angela) There are as many as 28 different kinds of semi-precious and precious stones used in Taj Mahal for decoration. It took 20 years to build the Taj Mahal, which was started in 1632 and ended in 1653. The architecture is built out of white marble from quarries of Rajasthan. In the morning it is pink, and becomes white in daylight and shines as gold in moonlight. It is symmetric from any direction. This tomb was to commemorate the most beloved princess of Mughal emperor Shah Jahan. (Source: people.com.cn) 
??Trans-Siberian Railway (Russia) Trans-Siberian Railway links the Moscow River, east Moscow and Japan, China and Mongolia. It is really hard to link the west and east Siberia, which makes the 8851-kilometer Trans-Siberian railway so admirable. The designer must ensure that it will function normally at a low temperature of minus 25 degrees Celsius. This railway acrosses eight time zones, 87 towns, and 16 major rivers. 90,000 people took part in construction for 10 years. Taking into account the time, simple tools such as shovels, rakes, wheelbarrows, the completion of the railway is more unbelievable. The railway was completed in 1904. (Source: people.com.cn) 
??Burj Khalifa (Dubai, UAE) Burj Khalifa is 828 meters tall, and it is also world's tallest building with free-standing structure. Engineers faced with many challenges, one of which is the winds. In this regard, they conducted more than 40 wind tunnel testings, which was done not only to determine the impact of the wind on the building, but also a test on the crane used in the construction. Burj Khalifa was completed on January 4, 2010. (Source: people.com.cn) 
??Akashi Kaikyo Bridge (Japan) Two million workers were involved in building Akashi Kaikyo Bridge, and the construction took 10 years. It connects the city of Kobe in Japan and the island of Awaji Iwatani. Before the completion of the bridge, the only way to travel between the two cities was ferry. (Source: people.com.cn) 
??White Pass &Yukon Route Railroad It was built during the Klondike Gold Rush, mainly by British investors. It took 26 months and 450 tons of dynamites to blast the Canadian coastal mountainscars. (Source: people.com.cn) 
??Tokyo Sky Tree (Japan) Tokyo Sky Tree's core strengthening columns are separated from the steel structure around, and it has been injected a temple-like seismic design. The tower was built in earthquake-prone area, but designers applied traditional Japanese construction techniques - central column. This technique relies on the center column to offset seismic waves, which greatly reduces the shaking. (Source: people.com.cn) 
??Ruins of Teotihuacan (Mexico) In the Aztec language, the Teotihuacan means "place where people become gods." It is the largest city in the pre-Columbian Americas. The most famous building is the Pyramid of the Sun. In the second phase of the construction, its height reached 224 meters, becoming the world's third tallest pyramid. (Source: people.com.cn) ?? 
??Panama Canal (Panama) The Panama Canal is a 77-kilometer waterway, connecting the Atlantic and Pacific. A series of locks control water flow, with each gate weighing 750 tons and each gate can fill 52 million gallons (about 197,000 cubic meters) of water. (Source: people.com.cn) 
??Taipei 101 (China Taiwan) Taipei 101 is the world's first building that is over 500 meters. It wore several title of the "world's most”. It has the world's fastest elevator, and it is the tallest building in the world. 8 reinforced pillars give it strong shock resistant feature. (Source: people.com.cn) 
??Grand Canyon air corridor (U.S.) The air corridors can support 71 million pounds (32.2 million kg) of weight, equivalent to 71 Boeing 747 aircraft with maximum load. Grand Canyon air corridor is above the Colorado River; it is created by Las Vegas businessman David Jin. The walkway was assembled on site. (Source: people.com.cn) 
??Shanghai World Financial Center (China) Shanghai World Financial Center presents a trapezoidal hole at the top. On the 101th floor, there is a design of a floating corridor of glass to reduce wind pressure. When it was completed in 2008, it was regarded as the world's second tallest and China's tallest building. (Source: people.com.cn) 
??Millau Viaduct Millau viaduct is the world's tallest bridge, and its height reaches 343 meters, higher than the Eiffel Tower. This viaduct passes across the Tarn River valley, contributing to easing the traffic pressure between Paris and Spain. It cost 320 million pounds (about 2.93 billion yuan). (Source: people.com.cn) |
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