FAQ About The Great Wall of China
The Great Wall was placed on the world heritage by UNESCO in 1987.
The Wall is not actually a continuous line, there are side walls, circular walls, parallel walls, and sections with no wall at all so one would wonder why then it is considered the longest in the world.
The Great Wall of China became a UNESCO World Heritage Site in December 1987. The wall is the longest man made structure in the world, with a total length of about 13170.7 mi or 21196.18 km. Made over the course of hundreds of years, the wall was built by over 6 different Chinese dynasties, and is over 2,300 years old.