The World's Biggest Wonders: From Nature to Human Ingenuity

 The World's Biggest Wonders

1. The Great Barrier Reef
   The largest coral reef system, stretching over 2,300 kilometers off the coast of Australia.

2. Mount Everest
   The tallest mountain on Earth, towering at 8,848 meters above sea level in the Himalayas.

3. Blue Whale
   The largest animal to ever exist, reaching lengths up to 30 meters and weighing as much as 180 metric tons.

4. The Amazon Rainforest
   The largest rainforest, covering over 5.5 million square kilometers across South America.

5. Sahara Desert
   The largest hot desert in the world, spanning about 9.2 million square kilometers.

6. The International Space Station (ISS)
   The largest human-made structure in space, with a mass of 420,000 kg and a size of 72.8 meters end to end.

7. Lake Baikal
   The deepest and oldest freshwater lake, located in Siberia, reaching depths of 1,642 meters.

8. The Burj Khalifa
   The tallest skyscraper in the world, standing 828 meters tall in Dubai.

9. Pacific Ocean
   The largest and deepest ocean, covering more than 63 million square miles.

10. Antarctica
    The coldest and driest continent, with an area of about 14 million square kilometers.