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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1711 projects

I think the name of this ship was Project Arabia, but I'm not sure.

Energy · United States

$11.75 billion

Corpus Christi LNG, first three trains

2018

Aerial view of Darwin, Northern Territory over Darwin Harbour.

Energy · Australia

$34 billion

Ichthys LNG development

2018

Everton Stadium in use at the 2025 Rugby League Ashes, 01.11.25.

Stadium · United Kingdom

£813 million

Hill Dickinson Stadium

2025

Approximately $1.07 billion

Photo of the construction site of The Bays metro station, taken during October 2024

Railway · Australia

AUD 28 billion

Sydney Metro West, 2025 estimate

Approximately $18.04 billion

View from the Mountains down to the falls

Dam · Democratic Republic of the Congo

$80 billion

Grand Inga proposed hydropower complex, 2011 concept

The National Science Foundation’s Inouye Solar Telescope.

Space mission · United States

$363 million

Daniel K. Inouye Solar Telescope

2021

Mohammed Bin Rashid Al Maktoum Solar Park

Energy · United Arab Emirates

AED 50 billion

Mohammed bin Rashid Al Maktoum Solar Park

Approximately $13.61 billion

Sea bridge connecting South Mumbai with Navi Mumbai

Bridge · India

INR 178.43 billion

Mumbai Trans Harbour Link / Atal Setu

2024

Approximately $2.66 billion

Map showing the location of the Shah Deniz gas field, the route of the South Caucasus Pipeline (SCP), the Trans-Anatolian gas pipeline (TANAP) under construction and the planned Trans Adriatic Pipeline (TAP), as well as the not realized Nabucco pipeline. Text in German

Energy · Turkey

$8 billion

TANAP gas pipeline, 2018 investment claim

2018

Stadium · Azerbaijan

€710.6 million

Baku Olympic Stadium

2015

Approximately $944.03 million

West Gate Tunnel entrance portal during a Community Open Day on 16 November 2025.

Road or highway · Australia

AUD 10.2 billion

West Gate Tunnel Project

Approximately $6.57 billion

Railway · China

CNY 23.267 billion

Fuzhou Metro Line 4

2025

Approximately $3.24 billion

The station pictured from the SpaceX Crew Dragon jsc2021e064211_alt (Dec. 8, 2021) --- This mosaic depicts the International Space Station pictured from the SpaceX Crew Dragon Endeavour during a fly around of the orbiting lab that took place following its undocking from the Harmony module’s space-facing port on Nov. 8, 2021.

Space mission · United States

€100 billion

International Space Station, 2005 programme estimate

2000

Approximately $124.41 billion

Proposed route of 1,410km Hoima-Tanga Oil Pipeline

Energy · Uganda

$4 billion

East African Crude Oil Pipeline

Railway · Malaysia

MYR 50.27 billion

East Coast Rail Link

Approximately $11.42 billion

Key oil and natural gas infrastructure in Azerbaijan

Energy · Azerbaijan

$28 billion

Shah Deniz 2 and South Caucasus Pipeline expansion

2018

Le terminal est situé sur la rive gauche de la baie de Burrard.

Energy · Canada

CAD 34.5 billion

Trans Mountain Expansion Project

2024

Approximately $25.19 billion

Energy · Germany

€1.2 billion

Nordsee One offshore wind farm

2017

Approximately $1.34 billion

Two ships involved in construction of the natural gas pipeline North Stream 2: offshore support vessel ARTEMIS OFFSHORE and in background pipe layer AKADEMIK CHERSKIY, Mukran, September 2020

Energy · Germany

€9.5 billion

Nord Stream 2 pipeline

Approximately $10.73 billion

Computer rendering of the Deep Impact space probe after separation of the impactor.

Space mission · United States

$267 million

Deep Impact mission

2005

Picture of the Fiserv Forum from the northwest.

Stadium · United States

$524 million

Fiserv Forum

2018

Port Prigorodnoye is Russia's first seaport built specifically to serve liquefied natural gas (LNG) ships and oil tankers.

Energy · Russia

$22 billion

Sakhalin-II multi-phase development

2009

NASA engineer Ernie Wright looks on as the first six flight ready James Webb Space Telescope's primary mirror segments are prepped to begin final cryogenic testing at NASA's Marshall Space Flight Center.

Space mission · United States

$9.7 billion

James Webb Space Telescope life-cycle estimate

2021

Stadium · Spain

€198.1 million

San Mamés Stadium

2013

Approximately $263.18 million