SortStack #993 — 2029-02-26

By size · Order from shortest to longest.

1. A hen's egg 5.5 cm

   An eggshell has up to 17,000 tiny pores that let the developing chick breathe through the surface.

2. The Taj Mahal 73 m

   Its white marble appears to change colour through the day, glowing pink at dawn and golden under moonlight.

3. The Washington Monument 165 m

   Look closely and the stone changes shade partway up, marking where construction paused for over 20 years.

4. The RMS Titanic 269 m

   When launched she was the largest moving man-made object on Earth, longer than most city blocks of the day.

5. Mont Blanc, the Alps 4.8 km

   Its summit is buried under permanent ice so thick that the official height changes slightly with the snow each year.

6. Lake Geneva (length) 73 km

   Shared by Switzerland and France, its waters take over a decade to fully cycle through and renew.

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