The Grand Canyon took about 5–6 million years to form as the Colorado River carved through rock layers.

The Andes mountains were formed by tectonic activity.

Petra in Jordan was carved into rose-colored rock cliffs.

Africa is so large that the United States, China, India, and most of Europe could all fit inside it simultaneously.

Australia is wider than the Moon.

The Nile is generally considered the world's longest river, but some measurements put the Amazon ahead depending on source point.

The Phoenician city of Tyre was built on an island.

The Great Wall of China is not visible from space with the naked eye — this is a common myth.

The tallest waterfall in the world is Angel Falls in Venezuela.