1. Great Wall Of China (China)
The wall runs for 13,171 miles and can be seen from space. As per historians, the wall was started to be built in the 7th century BC and was later expanded, rebuilt and maintained by the Ming Dynasty. It was made of brick, stone, wood, tampered earth among other materials. The wall acts as defensive barriers from foreign invasion.
Have to had the pleasure to see any of these famous walls in real-life? Took pictures? Share them with us in the comment section below.