SortStack #3380 — 2035-09-10

By size · Order from shortest to longest.

1. A standard paperclip 3.2 cm

   The familiar looped design, called the Gem clip, was never patented and has barely changed in over a century.

2. 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.

3. A giant sequoia (tallest) 89 m

   These trees can live over 3,000 years, and their thick bark resists fire that clears competing plants away.

4. The CN Tower, Toronto 553 m

   Its glass floor can hold the weight of dozens of moose, yet many visitors still cannot bear to step on it.

5. 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.

6. The Yellow River, China (length) 5.5K km

   Nicknamed 'China's Sorrow', its devastating floods have killed more people than perhaps any other natural feature.

← All puzzles · Play today’s SortStack