Tunnel · Switzerland
CHF 2.14 billion
Gotthard Road Tunnel second bore
2025Approximately $2.57 billion
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What the world’s biggest projects really cost
Compare published costs, timelines, project scale and original sources behind remarkable infrastructure and space missions.
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1733 projects
Bridge · United States
$2.3 billion
Green Line Extension
2022Airport · People's Republic of China
CNY 19.8 billion
Guangzhou Baiyun International Airport
2004Approximately $2.39 billion
Airport · Qatar
$17 billion
Hamad International Airport
2014Railway · Germany
€16.5 billion
Hamburg U5
2024Approximately $17.86 billion
Airport · United States
$2.4 billion
Harry Reid International Airport (then McCarran International Airport), Terminal 3
2012Airport · United Kingdom
£4.3 billion
Heathrow Airport Terminal 5
2008Approximately $7.9 billion
Railway · Thailand
THB 271.824 billion
High-Speed Rail Linking Three Airports
2025Approximately $8.27 billion
Energy · United Kingdom
£35 billion
Hinkley Point C nuclear power station
2026Approximately $46.08 billion
Airport · People's Republic of China
$20 billion
Hong Kong International Airport
1998Railway · India
INR 188 billion
Hyderabad Metro
2020Approximately $2.54 billion
Airport · South Korea
KRW 5632.3 billion
Incheon International Airport
2001Approximately $4.36 billion
Dam · Brazil
$12 billion
Itaipu Dam
1984Airport · United States
$4.2 billion
JFK New Terminal 6
2025Airport · Peru
$2 billion
Jorge Chávez International Airport
2024Airport · Japan
¥1562.3 billion
Kansai International Airport
1994Approximately $15.29 billion
Airport · United States
$1.5 billion
Kansas City International Airport
2023Stadium · Russia
RUB 45 billion
Krestovsky Stadium
2017Approximately $718.07 million
Airport · Malaysia
$3.5 billion
Kuala Lumpur International Airport
1998Airport · Indonesia
IDR 5800 billion
Kualanamu International Airport
2013Approximately $554.43 million
Airport · Kuwait
$4.3 billion
Kuwait International Airport Terminal 2
2022Airport · United States
$8 billion
LaGuardia Airport
2024Bridge · Russia
RUB 122 billion
Lena Bridge
2023Approximately $1.43 billion
Railway · Peru
$4.531 billion