SortStack #545 — 2027-12-06

By size · Order from shortest to longest.

1. The width of a human hair 0.1 mm

   Hair width is so consistent it was once a unit of precision; forensic labs still match hairs to within fractions of this.

2. A concert grand piano 2.7 m

   A grand piano's strings pull with a combined tension of around 20 tonnes, held by a single cast-iron frame.

3. A classic Volkswagen Beetle 4.1 m

   The Beetle stayed in production for over 65 years, making it one of the longest-running car designs ever.

4. The Leaning Tower of Pisa 58 m

   It began tilting during construction in the 1170s because of soft ground, and engineers only stabilised it in 2001.

5. The Great Pyramid of Giza 139 m

   It was the tallest human-made structure on Earth for nearly 3,800 years until medieval cathedrals surpassed it.

6. The Grand Canyon (rim-to-rim width) 29 km

   It is so wide that the cooler north rim and warmer south rim have noticeably different plants and wildlife.

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