People place roses into a gap at the Wall memorial during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Bernauer Strasse in Berlin, Germany November 9, 2019.

German Chancellor Angela Merkel and her husband Joachim Sauer attend a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

German President Frank-Walter Steinmeier speaks at a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Fireworks explode over Brandenburg Gate during a ceremony marking the 30th anniversary of the fall of the Berlin Wall in Berlin, Germany, November 9, 2019.

A person lights a candle at the memorial of the divided city and the victims of communist tyranny during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at the Wall memorial on Bernauer Strasse in Berlin, Germany, November 9, 2019.

A woman attends a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Singer Anna Loos performs during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Daniel Barenboim conducts during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

People place roses into a gap at the Wall memorial during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Bernauer Strasse in Berlin, Germany November 9, 2019.

A man drives a Trabant car during a parade marking the 30th anniversary of the fall of the Berlin Wall at a former border crossing between Eastern and Western Germany in the former border village of Moedlareuth, Germany November 9, 2019.

German Minister for Family Affairs, Senior Citizens, Women and Youth Franziska Giffey and German Justice Minister Christine Lambrecht attend a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Berlin's Mayor Michael Mueller speaks at a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Former Federal Commissioner for the Stasi Records Marianne Birthler speaks at a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

German Chancellor Angela Merkel, her husband Joachim Sauer, President Frank-Walter Steinmeier and his wife Elke Buedenbender attend a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Fireworks explode over Brandenburg Gate during a ceremony marking the 30th anniversary of the fall of the Berlin Wall in Berlin, Germany, November 9, 2019.

Fireworks explode over Brandenburg Gate during a ceremony marking the 30th anniversary of the fall of the Berlin Wall in Berlin, Germany, November 9, 2019.

Daniel Barenboim conducts during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

German Chancellor Angela Merkel attends lighting of candles at the memorial of the divided city and the victims of communist tyranny during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at the Wall memorial on Bernauer Strasse in Berlin, Germany, November 9, 2019.

Trabant cars drive past during a parade marking the 30th anniversary of the fall of the Berlin Wall at a former border crossing between Eastern and Western Germany in the former border village of Moedlareuth, Germany November 9, 2019.

A man holding a banana drives a Trabant car during a parade marking the 30th anniversary of the fall of the Berlin Wall at a former border crossing between Eastern and Western Germany in the former border village of Moedlareuth, Germany November 9, 2019.

People gather for a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Trabant cars drive past during a parade marking the 30th anniversary of the fall of the Berlin Wall at a former border crossing between Eastern and Western Germany in the former border village of Moedlareuth, Germany November 9, 2019.

German Chancellor Angela Merkel lights a candle at the memorial of the divided city and the victims of communist tyranny during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at the Wall memorial on Bernauer Strasse in Berlin, Germany, November 9, 2019.

Trabant cars drive past during a parade marking the 30th anniversary of the fall of the Berlin Wall at a former border crossing between Eastern and Western Germany in the former border village of Moedlareuth, Germany November 9, 2019.

Trabant cars drive past during a parade marking the 30th anniversary of the fall of the Berlin Wall at a former border crossing between Eastern and Western Germany in the former border village of Moedlareuth, Germany November 9, 2019.

People walk at a former border crossing between Eastern and Western Germany during an event marking the 30th anniversary of the fall of the Berlin Wall in the former border village of Moedlareuth, Germany November 9, 2019.

A general view shows the art installation "Visions in Motion" during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

People gather for a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

German Chancellor Angela Merkel and her husband Joachim Sauer attend a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

People place roses into a gap at the Wall memorial during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Bernauer Strasse in Berlin, Germany November 9, 2019.

Trabant cars drive past during a parade marking the 30th anniversary of the fall of the Berlin Wall at a former border crossing between Eastern and Western Germany in the former border village of Moedlareuth, Germany November 9, 2019.

German President Frank-Walter Steinmeier speaks at a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.

Fireworks explode over the Quadriga of the Brandenburg Gate during a ceremony marking the 30th anniversary of the fall of the Berlin Wall in Berlin, Germany, November 9, 2019.

Dancers perform during a ceremony marking the 30th anniversary of the fall of the Berlin Wall at Brandenburg Gate in Berlin, Germany, November 9, 2019.