Also known as Guanabara Bay , this harbor is the world's largest natural bay by volume of water. It is famously surrounded by granite peaks like Sugarloaf Mountain and overlooked by the Christ the Redeemer statue. 6. Parícutin Volcano (Mexico)

Parícutin is unique because humans witnessed its entire lifecycle. It suddenly emerged from a cornfield in 1943, giving scientists a rare opportunity to study a volcano's birth and growth firsthand. 7. The Northern Lights (Aurora Borealis)

The highest point on Earth, Mount Everest stands at 29,032 feet (8,849 meters) in the Himalayan range. It is the ultimate challenge for adventurers and a symbol of nature's daunting scale. 2. The Great Barrier Reef (Australia)

Located in Arizona, the Grand Canyon is a massive gorge carved by the Colorado River. It is celebrated for its immense size and the intricate layers of colorful rock that reveal millions of years of geological history. 4. Victoria Falls (Zambia & Zimbabwe)