Top 15 Humanity's Costliest Builds Unveiled

11. King Abdullah Economic Hub

Where: Saudi Arabia Complete Expense: $100 Billion* 2010 is the finished year. The $100 billion King Abdullah Economic City is primarily developed by Emaar Properties, with facilitation from the Saudi Arabian General Investment Authority (SAGIA). The goal of this metropolis is to diversify Saudi Arabia's oil-based economy by attracting both foreign and domestic investments. It is anticipated that some 500,000 individuals will relocate to the city, occupying the 260,000 apartments and 56,000 villas currently under construction.

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Pinterest/KKing Abdullah Economic City @somovalik Over twenty million containers a year will be able to pass through the 17-square-kilometer King Abdullah Port. However, the port's cutting-edge ship-to-shore cranes, which can lift 25 containers at once, and the fact that it links Asia, Africa, and Europe are two of its most notable features.

12. Saudi Arabia's NEOM

Where: Saudi Arabia Complete Expense: $500 billion* Year Completed: 2025 When finished, the planned cross-border city of NEOM will span a massive 10,200 square miles and cost an estimated $500 billion. It was announced in October 2017 by Saudi Crown Prince Mohammed bin Salman. It will have its own labor and tax laws that are separate from the Saudi government's current framework.

NEOM, Saudi Arabia and Shutterstock ©adznano3 The project's ultimate objective is for the city to run totally on renewable energy, mostly wind and solar energy. NEOM will have its own airport, which will be situated on Saudi Arabia's Red Sea coast in the northwest. The first section of NEOM is expected to be finished by 2025, notwithstanding obstacles and work stoppages.