Seven modern wonders of the worldPresentation Transcript
Seven Wonders of the Modern World
Channel Tunnel French : Le tunnel sous la Manche English Channel between England and France
During construction, both Britain and France raced to see who would reach the midpoint first. Britain won. It created a ground link between Great Britain and the rest of Europe
The Channel Tunnel (or "Chunnel") is actually made of three tunnels: two hold traffic and a smaller service tunnel serves as an emergency escape route.
It is the longest undersea tunnel in the world.
It cost over $21 billion to complete the Channel Tunnel.
Fastest way to get between London and Paris
CN Tower Toronto, Canada
A communications and observation tower standing 553.3 metres (1,815 ft) tall.
The CN Tower signature icon of Toronto's skyline, and a symbol of Canada
It remains the tallest free-standing structure in the Western Hemisphere,
Main Pod of the CN Tower in Toronto, Canada
CN Tower glass floor elevator ride
Revolving restaurants at the top tower
The floor in the 360-degree restaurants rotates once every 72 minutes allowing everyone a complete unobstructed view of the city below
World’s longest metal staircase
World’s highest wine cellar
Installed an intelligent LED illumination system
Empire State Building New York City, USA
Designed by the architectural firm of Shreve, Lamb, & Harmon Associates, the Empire State Building stands at 102 stories above ground.
Construction of the Empire State Building began in March of 1930 on the site of the old Waldorf-Astoria Hotel at 350 Fifth Avenue at 34th Street. It was completed 14 months later in May, 1931.
The tallest building in the world until the completion of the first tower of the World Trade Center in Lower Manhattan in 1972.
LOCATION 350 Fifth Avenue, between 33rd and 34th Streets, New York, NY 10001
Height: 1,472 feet (448 meters) to top of antennae. 1,250 feet (391 meters) to 102nd floor observatory. 1,050 feet (320 meters) to 86th floor observatory.
Golden Gate Bridge San Francisco City, USA
Why the "Golden Gate"?
The entrance to the San Francisco Bay from the Pacific Ocean is known as the Golden Gate Strait. A topographical engineer named it in 1846. It reminded him of a harbor in Istanbul named Chrysoceras, or Golden Horn.
The Golden Gate runs across the Golden Gate Strait and it connects San Francisco to Marin County.
The bridge was originally designed and built by engineer Joseph B. Strauss
Why build the bridge?
The time was right to span the Strait and link the city of San Francisco and the County of Marin .
Irving Morrow gave the bridge and architectural treatment.
The bridge was considered impossible to build.
But despite it all, the bridge was constructed in a little more than four years. It was completed on May 27, 1937
The Golden Gate Bridge’s 4,200 foot long main suspension span was a world record that stood for 27 years.
The two great cables extending from the bridge contain 80,000 miles of steel wire, which is enough to circle the equator three times.
The concrete poured to cement the bridge into the stormy waters below could have also been used to pave a five-foot wide sidewalk from New York to San Francisco.
It usually takes an hour to walk across the bridge.
Today, pedestrians and bicyclists are still allowed to cross the bridge on pathways with breathtaking views of the city, Alcatraz, and the Marin Headlands.
The Itaipu Dam Paraná River, border of Brazil and Paraguay
“ The true marvel of Itaipú, though, is its powerhouse ... a single building that puts out 12,600 megawatts -- enough to power most of California.”
The world's largest hydroelectric plant
Location: On the Parana River, 14 kilometers North of the International Bridge linking the cities of Foz do Iguacu, Brazil, and Ciudad del Este, Paraguay
Built from 1975 to 1991 Power plant has 18 generating units which produce 12,600 MW (megawatts) and 75 million MWh a year
The energy production of the dam has broken several records (a new record will approximately reach the 80 million MWh a year mark)
A major tourist attraction - received about 9 million visitors from 162 countries
The distance of all the dams measures up to be 7744 meters Has 14 segmented sluice-gates, which have a total discharge rate of 62,200 cubic meters per second
Took a great amount of materials to build the dam
The volume of iron and steel used would be enough to build 380 Eiffel Towers
The volume of concrete used is 15 times the amount used to build the Channel Tunnel between France and England
The final cost of the Itaipu Dam is $20 billion
North Sea Protection Works Netherlands
Built to prevent the Netherlands, which is below sea level, from being flooded during severe storms
The dam is 300 feet wide at sea level and 25 feet high at the level of its causeway
Without the dams, living near the large tidal inlet, Zuider Zee, or the delta created by the Rhine and Meuse rivers would be impossible
The dam was completed in 1984
Provides the people of the Netherlands with a lot of farmland
'"In terms of magnitude," an American trade journal wrote, the North Sea project "approaches of the Great Wall of China. In terms of complexity and technical sophistication, it approaches the lunar shot. It is unique, expensive, and quite unlike any other civil engineering project to be found on this planet."'
Panama Canal Panama
Opened on August 15, 1914
Saves a ship from traveling an extra 7872 miles around South America
The U.S. signed a treaty with Panama in 1903, allowing the U.S. to build a canal across the Isthmus of Panama
Col. William C. Gorgas provided help to the health problems involved with the project
John F. Stevens and Col. George W. Goethals helped with the engineering and administrative of the canal project
The U.S. owned and operated the canal until December 31, 1999, when it gave it back to Panama
Cost about $387 million to build
Helps a ship travel less distance and thus save time when traveling between the Atlantic Ocean and the Pacific Ocean