Before the use of bricks, the Great Wall was mainly built from rammed earth, stones, and wood. During the Ming, however, bricks were heavily used in many areas of the wall, as were materials such as tiles, … See more

While portions north of Beijing and near tourist centers have been preserved and even extensively renovated, in many other locations the wall is in disrepair. The wall sometimes provided a source of stones to build house… See more

Various factoids in popular culture claim that the Great Wall can be seen (with the naked eye) from space, with questionable degrees of veracity.
The Great Wall of China cannot be seen by the naked … See more

• Cheolli Jangseong
• Chinese city wall
• Defense of the Great Wall
• Gates of Alexander… See more