# What is the greatest engineering achievement in history?

> Four thousand years separate the oldest of these from the newest. Decide whether sheer scale or sheer difficulty should win.

*By YPB Team · Published August 23, 2026 · https://youpick.best/ranking/what-is-the-greatest-engineering-achievement-in-history*

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## Current results (no votes yet)

1. **The Apollo Moon Landing** — score 1000/1000
   Put twelve people on another world and brought them all back, on a budget of $25.4 billion in 1973 dollars.
2. **The Pyramids of Giza** — score 912/1000
   Built around 2560 BC from millions of limestone blocks, and the tallest structures on Earth for nearly four thousand years.
3. **The Golden Gate Bridge** — score 912/1000
   A 1937 suspension span across a strait engineers had called unbridgeable.
4. **The Netherlands Delta Works** — score 789/1000
   A system of dams, sluices and storm barriers holding back the North Sea from land below sea level.
5. **The Transistor** — score 684/1000
   Invented at Bell Labs in 1947, and the component every other modern technology is assembled from.
6. **The Large Hadron Collider** — score 684/1000
   A 27-kilometre ring of superconducting magnets cooled colder than deep space to find the Higgs boson.
7. **The Roman Aqueducts** — score 684/1000
   Moved water hundreds of kilometres on gravity alone, with gradients accurate to a few centimetres per kilometre.
8. **The Interstate Highway System** — score 684/1000
   Almost 50,000 miles of road that rebuilt where Americans live and how goods move.
9. **The James Webb Space Telescope** — score 560/1000
   Unfolded a 6.5-metre gold-coated mirror through 344 single-point failures, a million miles from any repair.
10. **The Hoover Dam** — score 560/1000
   Poured 2.5 million cubic metres of concrete in the Depression and tamed the Colorado River.
11. **The Internet** — score 560/1000
   A packet-switched network with no central authority that now carries almost all human communication.
12. **The Panama Canal** — score 410/1000
   Cut a shipping route between two oceans through mountains and malarial swamp, opening in 1914.
13. **The Transcontinental Railroad** — score 228/1000
   Joined the American coasts by rail in 1869, cutting a months-long journey to about a week.

Tags: usa, science, engineering