IN PICTURES: Top 10 of the world’s greatest megaprojects

Large-scale investment projects, or megaprojects, are engineering favorites that bring in impressive capital and public attention due to substantial impacts on communities and environments. 

Usually costing more than $1 billion dollars, these projects include massive roads, bridges, skyscrapers, airports, seaports and special economic zones encompassing thousands of square metre space such as the Jubail Industrial City in Saudi Arabia or the London Crossrail in the UK. 

Though one of the most challenging aspects of developing megaprojects is obtaining sufficient funding, Nations still find them especially appealing as they could often make up around 8 per cent of a country's total GDP and increase tourism and investment prospects. 



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