Famous constructions and how long they took compared to your age
Great Wall of China
Built across multiple dynasties
1,800 years to build
Completed: 1644
Egyptian Pyramids of Giza
Built around 2560 BC
20 years to build
Completed: 2560 BC
The Colosseum in Rome
Built by Emperor Vespasian
8 years to build
Completed: 80
Notre Dame Cathedral
Construction began 1163
182 years to build
Completed: 1345
Eiffel Tower
Built for 1889 World Fair
2 years to build
Completed: 1889
Empire State Building
410 days of construction
1 year to build
Completed: 1931
Golden Gate Bridge
Opened in 1937
4 years to build
Completed: 1937
Sydney Opera House
Opened in 1973
14 years to build
Completed: 1973
Sagrada Familia
Still under construction since 1882
142 years to build
Burj Khalifa
World's tallest building
6 years to build
Completed: 2010
Panama Canal
Opened in 1914
10 years to build
Completed: 1914
International Space Station
Assembly 1998 to 2011
13 years to build
Completed: 2011
iPhone (development)
Secret project started 2005
2 years to build
Completed: 2007
The Beatles career
From 1960 to 1970
10 years to build
Completed: 1970