TOP 10

Saudi Arabia

Jubail II is a 22-year-long project which , three decades ago , promised to raise an industrial city from the desert sands . The second phase of the Jubail development – the largest civil engineering project in the world – kicked off in 2014 , with an expansion budget of US $ 11bn . Once the project is completed , Jubail will comprise at least one hundred industrial plants , an 800,000-cubic-metre desalination plant , more than 530 miles of railway and road , alongside a 350,000-barrel-a-day oil refinery . The project should be wrapped up in 2024 , with over 50,000 residential units being added into the industry city by 2026 .