Add Yahoo as a preferred source to see more of our stories on Google. Petra in Jordan stands as one of the most famous archaeological sites on the planet (Getty Images) You may have read about the ...

From the Grand Canyon to the Aurora Borealis and the Great Barrier Reef, these are some of the natural wonders of the Earth you should see at least once in your lifetime. The Amazon Forest, the Great ...

To the Ancient Greeks, the number seven held special meaning. They saw seven wandering objects, or planets, in the sky — the five visible with the naked eye alongside the sun and moon. They catalogued ...

The seven wonders of the ancient world -- The seven wonders of the medieval mind -- The seven natural wonders of the world -- The seven wonders of the modern world -- The seven wonders of the animal ...