The New Seven Wonders of the World represent some of the most iconic and awe-inspiring destinations on the planet, voted by ...

How old is the Great Wall of China? Historians usually consider the defensive walls built during the Spring and Autumn period (770–476 BCE) and the Warring States period (475–221 BCE) to be the first ...

The UNESCO World Heritage Site was constructed over the course of 2,000 years. It worked as a fortification system to defend ...

Astronomers have discovered a Great Wall in the universe that is so huge that it defies logic and cosmological principles. The Great Wall of Hercules-Corona Borealis is a galaxy cluster that runs for ...