The World's Most Impressive Megaprojects
With the global population continuing to expand and with our world facing immense challenges from housing to transportation and our use of natural resources supersized construction projects have begun to proliferate.
With eye-watering budgets extreme complexity staggering scale and far-reaching impacts these are some of the world's most impressive mega projects as the demand for air travel continues to grow and with the united states preparing to host both the 2026 fifa world cup and the 2028 olympic games airports across the country from laguardia to lax are undergoing multi-billion dollar overhauls the 8.5 billion us dollar upgrade to chicago's o'hare international.
Will mark the first comprehensive redevelopment and expansion of the terminal core in the airport's history the master plan will see terminal 5 expanded while terminal 2 will be completely rebuilt becoming a global transfer hub with two satellite concourses adding 280 000 square meters of space and 50 additional gates to the airport to minimize disruption the new concourses will be built first allowing them to take over operations from terminal 2 when the existing building.
Is demolished work on terminal 5 is scheduled to complete by 2022 and subsequent phases will open in stages up to 2028 a joint project between 35 nations the iter formerly known as the international thermonuclear experimental reactor is currently under construction in france once completed the 20 billion us dollar center will allow scientists to recreate the fusion reactions that take place inside the sun potentially revolutionizing energy production consisting of three main buildings.
The product is centered around the tokamak a magnetic chamber that will contain the plasma created when particles are heated over 150 million degrees celsius and collided to produce fusion energy construction of the vast building that houses the reactor began in 2013 requiring the development of 10 different types of concrete to shield workers from radiation with more than 60 percent of the reactor complex already complete work is now underway on the tokamak inside its 337 000 tonne housing chamber.
The entire complex is due to come online in 2025 ethiopia's grand renaissance dam sits alongside nigeria's echo atlantic and egypt's 58 billion new capital as one of africa's most impressive mega projects with work first starting back in 2011 the dam will become the continent's largest hydroelectric plant generating some 6.45 gigawatts of power when it completes in 2022 standing 155 meters tall.
And extending almost 1 800 meters across the blue nile the main structure is being formed with over 10 million tons of concrete holding back 74 cubic kilometers of water when the reservoir is full while the dam will transform ethiopia's energy production the project has been marred in controversy since inception 20 000 people were relocated to enable the construction works and many have raised concerns over the project's 4.8 billion us dollar price tag which represents roughly six percent of ethiopia's entire gdp and saw funding diverted away from other much-needed energy projects.
The dam has also reignited an ongoing dispute between ethiopia and the downstream nations of sudan and egypt who see the project as an attempt by the ethiopian government to gain regional influence since its first bullet train shot onto the world stage in 1964 japan has pioneered the development.
Of high-speed rail while competition from europe and china has seen the title of world's fastest trains move west in recent years the new chao shinkansen with its maglev carriages able to reach speeds of 500 kilometers per hour will see japan reclaim the title despite tokyo.
And nagoa sitting 284 kilometers apart the new line will bring the two cities within 40 minutes of each other set to become one of the shortest routes on the shinkansen network 90 of the trackway will run underground and beneath the japanese alps reducing the travel distance by over 50 kilometers and saving 4.9 billion us dollars over alternative options the new line set to open in 2027 plans are already underway for an extension to link nagowa with the saka a 30.
5 billion us dollar meca project in itself rising 271 metres above sydney's emerging barangaroo district the 75-storey one barangaroo also known as crown sydney will become the city's tallest building designed by wilkinson air the tower's structural form is based around three twisting petals.
And will contain a casino australia's first six star hotel and 82 luxury apartments overlooking the famous harbour with its form ensuring that no two rooms are the same the tower is clad in over seven thousand unique triangle shaped panels giving it a crystalline appearance as it rises the complex will offer extreme luxury.
With a spa gym open-air tennis court two rooftop infinity pools and a michelin star restaurant topping out in november 2019 and due to open in 2021 one barangaroo is already making its mark on the city's skyline if you enjoyed this video.
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