
1) Built by russians in 1960 2) Cold War barrier 3) Destroyed landmark in Germany 4) Deutschland divider, once
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https://www.crosswordclues.com/clue/berlin-wall

barrier that surrounded West Berlin and prevented access to it from East Berlin and adjacent areas of East Germany during the period from 1961 to ... [8 related articles]
Found on
http://www.britannica.com/eb/a-z/b/52

Dividing barrier between East and West Berlin from 1961 to 1989, erected by East Germany to prevent East Germans from leaving for West Germany. Escapers were shot on sight. Berlin had been formally...
Found on
http://www.encyclo.co.uk/local/20688
Click images to enlargeDividing barrier between East and West Berlin from 1961 to 1989, erected by East Germany to prevent East Germans from leaving for West Germany. Escapers were shot on sight. Berlin had been formally divided into East and West sectors following the Berlin blockade by Soviet forces June 1948–May 1...
Found on
https://www.encyclo.co.uk/local/21221

a guarded concrete wall 28 mi. (45 km) long, with minefields and controlled checkpoints, erected across Berlin by East Germany in 1961.
Found on
https://www.infoplease.com/dictionary/berlin-wall
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