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.

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1733 projects

Tottenham Hotspur Stadium, London, England, United Kingdom

Stadium · United Kingdom

£1 billion

Tottenham Hotspur Stadium

2019

Approximately $1.28 billion

Stadium · United States

$1.061 billion

U.S. Bank Stadium

2016

Looking at the new UBS Arena within Belmont Park, on Hempstead Turnpike at the Cross Island Parkway in Elmont, Nassau County, New York. The arena was opened in November 2021, just over two years after groundbreaking, on what was previously a Belmont Park parking lot.

Stadium · United States

$1.1 billion

UBS Arena

2021

Zoomable full resolution image available at davidrumsey.com. This image 6809.071 is a part of image group 6809.000. Color map with inset on 2 sheets. Shows towns, inhabitants, railways, roads, canals, Indian reservations, etc. Relief shown by hachures and spot heights. Depth shown by bathymetric tints and in Fathoms. Prime meridian is Greenwich. Second and New edition of The Times Atlas published in 1900 (see our 1895 first edition, 1010.000), containing 132 pages of maps and comprising 196 maps

Railway · United States

$1.34 billion

Valley Metro Rail: South Central Extension

2025

Wembley Stadium, London, England, United Kingdom

Stadium · United Kingdom

£798 million

Wembley Stadium

2007

Approximately $1.6 billion

Plan of Western Harbour Tunnel and Warringah Freeway Upgrade

Tunnel · Australia

AUD 4.5 billion

Western Harbour Tunnel

2029

Approximately $3.45 billion

Western Sydney Airport, aerial view of the terminal, January 2025

Airport · Australia

AUD 5.3 billion

Western Sydney International Airport Stage 1

2026

Approximately $3.41 billion

The platform was nearly empty and people who arrived assumed they were in the wrong place.

Railway · United States

$4 billion

World Trade Center Transportation Hub

2016

Railway · People's Republic of China

CNY 57.234 billion

Xiong'an–Xinzhou high-speed railway

2027

Approximately $8.29 billion

Computer-generated image of the proposed high-speed trains for use in California.

Railway · United States

$126 billion

California High-Speed Rail

2026

Darlington Nuclear Generating Station panorama.

Energy · Canada

CAD 14.319 billion

Darlington Nuclear Generating Station

1993

Approximately $11.1 billion

El-Dabaa nuclear power plant construction

Energy · Egypt

$28.75 billion

El Dabaa Nuclear Power Plant

2026

Dam · Tajikistan

$6.1 billion

Rogun Dam

2023

Baustelle (Herbst 2019) beim Ostportal des Semmering-Basistunnels (SBT) am Rande der niederösterreichischen Stadt Gloggnitz. Der SBT wird in drei Baulosen errichtet, hat eine Gesamtlänge von 27,3 km und soll 2026 in Betrieb gehen. Das Portal und der Tunnelabschnitt Gloggnitz mit einer Länge von ca. 7,4 Km gehört zum Baulos 1.1., ist mit rd. 450 Mio. Euro budgetiert und wird von den Firmen Implenia Österreich, HOCHTIEF Infrastructure Austria und Thyssen Schachtbau errichtet.

Tunnel · Austria

€4.2 billion

Semmering Base Tunnel

2024

Approximately $4.55 billion

Электровоз Bombardier TRAXX P160 AC3 № 3007 на подземной железнодорожной станции «Иерусалим-Ицхак Навон» в Иерусалиме.

Railway · Israel

ILS 8 billion

Tel Aviv–Jerusalem railway

2019

Approximately $2.24 billion

Terminal station of metro line 1 of Thessaloniki at the New Railway Station of the city

Railway · Greece

€3 billion

Thessaloniki Metro

2026

Approximately $3.39 billion

Abuja Rail Mass Transit Phase 1 in Nigeria

Railway · Nigeria

$823.5405 million

Abuja Rail Mass Transit Phase 1

2018

Tunnel · Canada

$140 million

Alaska Highway

1942

The new terminal of Bahrain International Airport

Airport · Bahrain

$1.1 billion

Bahrain International Airport Expansion Project

2020

A northbound Green Line train seen seen from the Farallones Street footbridge in July 2023

Railway · United States

$1.619 billion

Bay Area Rapid Transit

1974

G25 to Shanghai-Hongqiao, just after G23.

Railway · People's Republic of China

CNY 220.9 billion

Beijing–Shanghai high-speed railway

2011

Approximately $34.19 billion

Elektrownia Bełchatów widziana od południa, zza wielkiego dołu odkrywkowego kopalni węgla brunatnego.

Energy · Poland

€1.2 billion

Bełchatów Power Station 858 MW unit

2011

Approximately $1.67 billion

Tunnel · Czech Republic

CZK 43 billion

Blanka tunnel complex

2015

Approximately $1.75 billion

Railway · Italy

€6.7 billion

Bologna–Florence high-speed railway

2010

Approximately $8.88 billion