From the Great Wall of China to the Berlin Wall, here are some of the most famous border walls across the globe
Arguably the most famous border wall, the Great Wall of China is one of the world's largest building- construction projects
Up to one million workers reportedly died during its construction-giving the wall the nickname "longest cemetery on Earth," per Encyclopedia Britannica
The Berlin Wall was erected in 1961 when the Soviet-aligned East German government built a series of concrete partitions separating East and West Berlin
It stood for more than 28 years before East German authorities finally opened it on November 9, 1989
Also known as the "Red Snake" for its distinctive, red-colored bricks, the Great Wall of Gorgon in northern Iran was built in the 5th-6th century during the Sasanian dynasty
The wall spans some 124 miles of modern-day Gorleston province and includes nearly 40 forts
Hadrian's Wall was built to protect northwestern Britain from barbarians
Emperor Hadrian ordered the construction of this wall, and it took about six years for 15,000 infantrymen to complete it
The Peace Walls (or Peace Lines) were first constructed in Belfast in 1969 in order to separate Catholic neighborhoods from those of Protestants
In 2013 the Northern Ireland government vowed to remove all of the walls, and the first Peace Wall was torn down in 2016