SortStack #1469 — 2030-06-17

By size · Order from shortest to longest.

1. A one-person kayak 3.4 m

   The kayak was invented by Arctic peoples thousands of years ago, sealed with animal skin to stay watertight.

2. A reticulated python 6.6 m

   The world's longest snake, it kills by constriction, tightening with every breath its prey exhales.

3. 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.

4. The Eiffel Tower 330 m

   It grows up to 15 centimetres taller in summer because the iron expands in the heat.

5. The Great Barrier Reef (length) 2.3K km

   It is the largest living structure on Earth, built by tiny coral animals and visible from space.

6. The River Danube (length) 2.9K km

   It flows through more countries than any other river in the world, passing four national capitals on its way.

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