Berlin Wall

The  was a concrete barrier that physically divided and  from each other. It was constructed in 1961 in the midst of the between the  (and its allies) and the United States of America (and its allies). It stopped all citizens of Berlin from crossing into either side of the country, though it was created mostly to prevent citizens from the Soviet-controlled eastern side of Berlin from escaping to the Western-controlled west side of Berlin. It stood until its destruction in 1989 after a press conference from in which his statements were misinterpreted, leading to the wall being torn down by thousands of people.

Mario is Missing!
The Berlin Wall is one of the landmarks of Berlin visited by Luigi in the DOS version of Mario is Missing!. In a raid on the city (and many others around the globe), Bowser sent his Koopa Troopas to steal one brick from the Berlin Wall, which forced it to close down. Luigi had to find and return the brick before the Berlin Wall could become open to tourists once again.

Mario's Time Machine
In Mario's Time Machine, Bowser travels back in time to 1989 and steals a single Sledgehammer from the site, which is apparently enough to halt its destruction. The Berlin Wall then becomes filled with Bodyslam Koopas and Koopa Troopas. Mario later travels back in time to the Berlin Wall himself to return the Sledgehammer while the Koopas attempt to stop him. He eventually reaches a guardpost (at the far-right of the screen) and drops off the Sledgehammer. Mario then travels back in time to the present as a news article congratulates Mario for helping topple the Berlin Wall.

Mario Kart series
The Berlin Wall later appeared in Berlin Byways in Mario Kart Tour. It receives most of its focus in Berlin Byways 1, where Whomps stand in holes in the wall and attempt to crush racers.

Gallery
Muro di Berlino