Unesco description
In c. 220 B.C., under Qin Shi Huang, sections of earlier fortifications were joined together to form a united defence system against invasions from the north. Construction continued up to the Ming dynasty (1368–1644), when the Great Wall became the world’s largest military structure. Its historic and strategic importance is matched only by its architectural significance.

Received through Postcrossing on 28.11.2013
Jiankou sector
The Jiankou section was built in 1368 but has never been restored since its construction.

Received through a private swap on 01.01.2012
Jinshanling Sector
The Jinshanling Sector is one of the most striking sectors because of the extremely steep slopes it has to climb. There are 67 watchtowers in this area

Received through a private swap on 01.01.2012
Jinshanling Sector
The Great Wall is a series of fortifications made of stone, brick, earth, wood and other materials. Several parts were built as early as the 7th century and later joined together in the Great Wall.​
The walls measure 8.850 kilometers

Received through Postcrossing on 29.09.2017
Jinshanling sector

Received through a private swap on 28.03.2018