It is mounted on a boulder in the middle between the two exits to the underground tramway on the station forecourt. Mayor Katja Dörner: "I am delighted that the memorial plaque, which makes a valuable contribution to the culture of remembrance, can now be found once again in the center of Bonn. We are setting an example and hope that this plaque will help to raise public awareness of the crimes committed by the National Socialists against Bonn's Sinti and awaken interest in the history and culture of the Sinti and Roma." The installation of the boulder was agreed with the Lower Monument Authority.

The State Association of German Sinti and Roma NRW had long campaigned for the plaque to be reinstalled. Chairman Roman Franz says: "The commitment to democracy is the basis for bringing the majority and minority closer together." Around 100 Sinti lived in Bonn in the 1930s and only around half survived the Nazi era.

The memorial plaque was inaugurated and erected for the first time in Bonn on December 16, 1999. It was created on the initiative of the regional association and was realized by the city of Bonn. Roman Franz was also involved in the planning and implementation at the time. Due to construction work on the station forecourt, the city of Bonn had to remove the memorial plaque in 2016. Mayor Katja Dörner regrets that it was not possible to find an alternative location for the memorial plaque during the transitional period of the construction work and that it was not reinstalled more quickly after the construction work was completed.

The memorial plaque is intended to ensure a dignified remembrance of the murdered Bonn Sinti and also provide an impetus for an active examination of the history of the Sinti and Roma in Bonn. The inscription reads: "We commemorate the Bonn Sinti who were deported from their homes in 1938-1945 and became victims of the National Socialist genocide in Auschwitz and elsewhere. The citizens of the city of Bonn 1999."