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The Largest Megaprojects in the World That Will Redefine the Global Landscape in 2024, Focusing on Bridge, Skyscraper, Smart City Construction, and Much More.
In 2024, the world will witness the completion of some of the largest megaprojects in the world, initiatives that promise to transform cities, modernize infrastructures, and create new global landmarks. From grand works that challenge engineering to technological ventures that anticipate the future, these projects represent the pinnacle of modern construction. Let’s dive into the details of each of these 21 megaprojects that are about to become a reality.
1. Line 6-Orange of São Paulo Metro
One of the largest urban infrastructure projects in Brazil, the construction of Line 6-Orange, also known as the University Line, is progressing to connect important educational and healthcare regions of São Paulo. With a length of 15.3 km, 15 stations, and a cost of $3 billion, the line promises to ease the city’s traffic. Initiated in 2015, the project experienced stoppages but is expected to be completed between 2024 and 2025.
2. Seal Tower, Dubai
In Dubai, the construction of the Seal Tower stands out not only for its height, at 365 meters, but also for the boldness of its design, consisting of two glass towers connected by a walkway 300 meters above the ground. With an investment of $544 million, the tower will house more than 1,000 rooms, including 150 suites, making it the tallest hotel in the world when launched at the end of 2024.
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Florianópolis will receive a million-dollar BRT that will begin construction in 2026 with nearly 400 million in funding from the federal government and the Inter-American Development Bank, and the map already shows the routes for the exclusive bus corridors.
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Without a blueprint, without an engineer, and using scrap from the dump, a father spends 15 years building an 18-room castle for his daughter, featuring tram tracks, 13 fireplaces, and over 700 m², which may now be demolished.
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A megaproject worth R$ 89 billion is advancing in Iraq and promises to change the game in global trade by creating a new corridor between Asia and Europe, reducing traditional routes and repositioning the country as a logistics powerhouse.
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Goodbye bedside table: floating shelves become a trend in 2026 by freeing up space in the bedroom, improving circulation, bringing visual lightness, and integrating technology without taking up floor space.
3. Neom Island, Saudi Arabia
Part of the gigantic Neom project, Neom Island is being developed as a luxury tourist destination, with a cost of $800 million. The construction includes resorts, marinas, and golf courses, attractions to draw global tourists with exclusive experiences. The completion of this island, which is part of Saudi Arabia’s economic diversification plan, is expected in 2024.
4. For Frankfurt, Germany
For Frankfurt is a multifunctional complex of skyscrapers aimed at transforming the city center of Frankfurt. Comprising four towers that will house offices, residences, hotels, and commercial spaces, the project has a cost of €1 billion. The construction aims to redefine the city’s skyline, offering modern facilities and a new urban meeting point by the end of 2024.
5. Renovation of Notre-Dame Cathedral, Paris
After the devastating fire in 2019, Notre-Dame Cathedral, an icon of Gothic architecture, is undergoing meticulous restoration. The project, with a cost of €850 million, combines traditional and modern construction techniques to ensure fidelity to the original design. The cathedral is expected to reopen to the public at the end of 2024, although the complete restoration will continue beyond this date.
6. Santiago Bernabéu Stadium, Madrid
Real Madrid is investing €1 billion in the renovation of the Santiago Bernabéu, which aims to make it one of the most modern stadiums in the world. The construction includes a retractable roof, futuristic façade, and new commercial spaces, as well as increasing the club’s revenue-generating capacity. The completion of the works is expected in August 2024.
7. Woven City, Japan
Located at the base of Mount Fuji, Woven City, developed by Toyota, is a living laboratory of innovation. A smart city will integrate autonomous vehicles, robotics, and sustainable infrastructure in an area of 700,000 m². With a cost of $4.6 billion, the construction of the first phase will be completed between late 2024 and early 2025.
8. Mumbai Trans Harbour Link, India
The longest bridge in India, the Mumbai Trans Harbour Link, will connect Mumbai to Navi Mumbai, spanning 22 km. With six traffic lanes and modern infrastructure, the construction aims to support the intense traffic in the region, with an investment of $2.2 billion. Completion is expected in September 2024.
9. Expansion of Incheon International Airport, South Korea
With the addition of a new terminal and expansion of existing runways, Phase 4 of the expansion of Incheon Airport aims to increase its capacity to 106 million passengers per year. The project, which will cost $4.2 billion, is a key piece of South Korea’s transportation infrastructure. Completion of the works is expected in 2024.
10. Navi Mumbai International Airport, India
With the goal of easing traffic at Chhatrapati Shivaji International Airport, the construction of the new Navi Mumbai International Airport represents one of the largest infrastructure investments in India, with a cost of $2.3 billion. Designed to accommodate up to 60 million passengers per year, the airport will be completed in December 2024.
11. Gordie Howe International Bridge, Canada-U.S.
This 2.5 km bridge aims to facilitate trade and transportation between Canada and the United States. With six lanes and new customs facilities, the construction is essential for strengthening the connection between Windsor, Ontario, and Detroit, Michigan. The project, which will cost $5.7 billion, is expected to be completed at the end of 2024.
12. Melbourne Metro Tunnel, Australia
With a 9 km tunnel and five new underground stations, the Melbourne metro project is budgeted at $7 billion. The construction aims to increase capacity and improve connectivity of the city’s transportation system. Completion of the works is expected in 2024 and 2025.
13. Renovation of LaGuardia Airport, New York
The transformation of LaGuardia Airport, which began in 2016, is nearly complete. With a total cost of $8 billion, the project has modernized terminals, boarding areas, and ground transportation infrastructure. Some areas are still in the final stages of construction, with completion expected in 2024.
14. Phase 1 of Qiddiya, Saudi Arabia
Qiddiya is a mega entertainment and culture complex planned to be one of the world’s leading tourist destinations. Phase 1, which includes theme parks, sports facilities, and recreational areas, has been under construction since 2019, with a cost of $8 billion. Completion of this initial phase is expected in 2024.
15. Eglinton Line 5, Toronto
The new rapid transit line in Toronto, with a length of 19 km, 10 km of which are underground, and 25 new stations, is one of the largest infrastructure projects in Canada. With a cost of $7 billion, the construction will be completed by the end of 2024.
16. Infrastructure for the 2024 Paris Olympics
To host the 2024 Olympic Games, Paris is investing €12 billion in the construction and renovation of sports facilities, including the Olympic Village and Stade de France. Most of the works have recently been completed, but some will still be finalized throughout 2024.
17. Sydney Metro City, Australia
The expansion of the Sydney metro includes 30 km of new tunnels and seven underground stations. This $10 billion project has been under construction since 2017, with completion and the start of operations expected in 2024.
18. Maya Train, Mexico
The Maya Train, which runs 1,525 km in southeastern Mexico, is a railway project aimed at boosting tourism and economic development in the region. With 17 stations and a cost of $10 billion, the construction is expected to be completed by December 2024.
19. Samsung Chip Factory, Texas
The new semiconductor factory from Samsung in Taylor, Texas, is one of the largest in the world. Designed to increase the production of advanced chips, the construction costing $25 billion is set to be completed in the second half of 2024.
20. Vogtle Plant, U.S.
The construction of reactors 3 and 4 of the Vogtle Plant in Georgia is a $30 billion project. Reactor 4, which is set to be completed in 2024, is one of the first new nuclear reactors built in the U.S. in decades.
21. Red Sea Project, Saudi Arabia
The Red Sea Project, a sustainable tourism venture on the coast of the Red Sea, spans over 28,000 km² and includes 90 islands. An initial phase, which will cost $10 billion and include 16 hotels and basic infrastructure, is expected to be completed in 2024, with the full project slated for 2030.
Largest Megaprojects in the World Exemplify What Is Most Advanced in Construction
Each of these largest megaprojects in the world exemplifies what is most advanced in construction, reflecting humanity’s ability to undertake grand ventures that not only shape the present but also build the future.
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