Airport · United Kingdom
$18.5 million
BudgetGuessr project library
What the world’s biggest projects really cost
Compare published costs, timelines, project scale and original sources behind remarkable infrastructure and space missions.
Verified project costs
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1733 projects
Skyscraper · United States
$175 million
John Hancock Tower
1976Dam · Singapore
SGD 17 million
Johor–Singapore Causeway
1924Approximately $5.55 million
Stadium · United States
$7 million
Juan Ramón Loubriel Stadium
2012Stadium · Italy
€155 million
Juventus Stadium
2011Approximately $215.75 million
Dam · Nigeria
$568 million
Kainji Dam
1978Energy · India
INR 45.5 billion
Kamuthi Solar Power Project
2016Approximately $677.13 million
Dam · Iran
$622 million
Karkheh Dam
2000Dam · Iran
$1.2 billion
Karun-4 Dam
2010Stadium · Poland
PLN 187.5 million
Kazimierz Górski Stadium
2024Approximately $47.1 million
Dam · Turkey
$400 million
Keban hydroelectric project
1982Stadium · United Kingdom
£20 million
Keepmoat Stadium
2006Approximately $36.8 million
Energy · United States
$776.15 million
Kewaunee Power Station
2007Dam · Bahrain
SAR 3.013 billion
King Fahd Causeway
1986Approximately $812.95 million
Airport · South Africa
ZAR 6.8 billion
King Shaka International Airport
2010Approximately $928.81 million
Skyscraper · Saudi Arabia
SAR 1.7 billion
Kingdom Centre
2002Approximately $453.33 million
Stadium · United States
$67 million
Kingdome
1976Bridge · Canada
CAD 15 million
Knight Street Bridge
1974Approximately $15.34 million
Stadium · Slovakia
€24 million
Košice football arena
2024Approximately $25.98 million
Stadium · Russia
RUB 25 billion
Krasnodar Stadium
2017Approximately $428.5 million
Bridge · Croatia
$50 million
Krk Bridge
1980Energy · Slovenia
$649.2 million
Krško Nuclear Power Plant
1983Dam · Nepal
$117.84 million
Kulekhani Dam
1982Stadium · Japan
¥12.402 billion
Kumagaya Rugby Stadium
2018Approximately $112.31 million