The most famous example of fortification in the world, the Great Wall of China stretches for more than 6,000km across inhospitable terrain. Charting its develop

The most famous example of fortification in the world, the Great Wall of China stretches for more than 6,000km across inhospitable terrain. Charting its develop

The Great Wall of China is the most extensive and famous example of fortification in the world. Charting its development from construction in the 7th century BC

In the wake of the bloody civil war that followed Finland's independence from Russia in 1917, the border between the two countries was established across the Ka

Everyone has heard of the Great Wall of China and knows of Hadrian's Wall and the other barriers lining stretches of Rome's imperial frontiers. But Peter Spring