The museum known as the Otto Weidt Workshop for the Blind (Blindenwerkstatt Otto Weidt) is located in a courtyard near the Hackesche Höfe and tells the story of Otto Weidt, a small Berlin-based manufacturer. During the Second World War, Weidt employed mostly blind and deaf Jewish workers in his workshop. They manufactured brooms and brushes here, some of which were made for Germany's Wehrmacht, which meant that the workshop was deemed "wehrwichtig", i.e. officially important for defence purposes. A number of different life stories testify to Otto Weidt's attempts to protect his Jewish workers from persecution and deportation. For example, he organised food and false passports for them and even bribed the Gestapo on many occasions. When the threat became greater, he went so far as to seek out hiding places for some of his employees. One of these hiding places was located in the very space of the present-day museum.  
Today, the rooms are largely preserved in their original state. The exhibition uses photographs, letters, documents and media stations to show how terrifying the situation was for Jews who remained in Germany in that era. At the same time, it commemorates those "silent heroes" who risked their lives to help others in danger.