Ancient Athens had its own "Great Wall" like China's, built to stop raids during the Peloponnesian War (431-404 BC).

China has led an environmental campaign of historic proportions to combat desertification in its dry northern lands. This ...

Just north of Beijing, you'll find one of the most famous monuments in the world: the Great Wall of China. Although it's unlikely you'll see the whole thing, you should aim to experience a portion ...