In the 1980s, a Turkish worker in Germany, Osman Kahlin, provoked controversy when he turned a patch of disputed land against the Berlin Wall into a makeshift farm. The land was owned by East Germany, but lay on the Western side of the wall due to a quirk in the wall's hurried construction. Kahlin fought a running battle with both East and West German police to keep hold of the land, and kitted it out with a fully functioning treehouse that became a local symbol of resistance to authority. Alex Eccleston speaks to Osman's son, Mehmet. A Whistledown production for BBC World Service.(Photo: Osman's treehouse. Credit: Schlemmer/ullstein bild via Getty Images)

In the 1980s, a Turkish worker in Germany, Osman Kahlin, provoked controversy when he turned a patch of disputed land against the Berlin Wall into a makeshift farm. The land was owned by East Germany, but lay on the Western side of the wall due to a quirk in the wall's hurried construction. Kahlin fought a running battle with both East and West German police to keep hold of the land, and kitted it out with a fully functioning treehouse that became a local symbol of resistance to authority. Alex Eccleston speaks to Osman's son, Mehmet. A Whistledown production for BBC World Service. (Photo: Osman's treehouse. Credit: Schlemmer/ullstein bild via Getty Images)

Treehouse on the Berlin Wall

Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there.
 
For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more.
 
Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. 
 
We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher.
 
You can learn all about fascinating and surprising stories, such as the civil rights swimming protest, the disastrous D-Day rehearsal, and the death of one of the world’s oldest languages.

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Eye-witness accounts brought to life by archive. Witness History is for those fascinated by the past. We take you to the events that have shaped our world through the eyes of the people who were there. For nine minutes every day, we take you back in time and all over the world, to examine wars, coups, scientific discoveries, cultural moments and much more. Recent episodes explore everything from the death of Adolf Hitler, the first spacewalk and the making of the movie Jaws, to celebrity tortoise Lonesome George, the Kobe earthquake and the invention of superglue. We look at the lives of some of the most famous leaders, artists, scientists and personalities in history, including: Eva Peron – Argentina’s Evita; President Ronald Reagan and his famous ‘tear down this wall’ speech; Thomas Keneally on why he wrote Schindler’s List; and Jacques Derrida, France’s ‘rock star’ philosopher. You can learn all about fascinating and surprising stories, such as the civil rights swimming protest, the disastrous D-Day rehearsal, and the death of one of the world’s oldest languages.

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