This Asian edifice is arguably the world's best known wall.
Germany's best known wall.
This wall is in the Old City of Jerusalem.
This wall marked the northern limit of Roman rule in Britain.
President Trump said he would build this wall and make Mexico pay for it.
Nickname of the left-field wall at Fenway Park
Hitler's system of coastal fortifications on the coast of Europe.
This memorial in Washington, D.C., is often called "The Wall."
A piece of minimalist art in the SoHo neighborhood of Manhattan
Answers:
The Great Wall of China
The Berlin Wall
The Western Wall (Wailing Wall, Kotel, Buraq Wall)
Hadrian's Wall
The Mexico-United States barrier
"The Green Monster"
The Atlantic Wall
The Vietnam Veterans Memorial
"The Wall" ("The Gateway to SoHo")