LIVE BLOG: Latest updates on the 4U9525 crash
Government spokesman Steffen Seibert announced on Twitter early on Wednesday morning that flags outside the Chancellery in Berlin were flying at half mast.
Meanwhile, at Düsseldorf airport, people had set up a small memorial with candles and notes to the victims of the crash:
Flags elsewhere around Germany followed suit, including those at the Bundestag (German parliament), at airports across the country, and in the town of Haltern in North Rhine-Westphalia, which lost 16 school pupils in the crash.
The whole state of North Rhine-Westphalia will hold a minute of silence on Thursday at 10:53 am, the time of the crash on Tuesday.
In Hamburg, the flag outside the city hall was also at half mast:
And Germanwings flags were lowered at the city's airport:
The Spanish Embassy in Berlin also lowered its flags in mourning:
Newspapers, too, shared in the public grief, with the Berliner Zeitung publishing a black front page:
Minute of silence
Germanwings and Lufthansa staff shared a minute of silence at 10:53, the time the plane crashed on Tuesday, outside Germanwings HQ in Cologne and Lufthansa head office in Frankfurt.
Ministers also observed a minute of silence at their weekly cabinet meeting:
Düsseldorf opens book of condolences
Meanwhile, the city of Düsseldorf opened a book of condolences for people to leave a personal message in memory of the victims.
Among the first to sign it was city mayor Thomas Geisel.
There was also a book of condolences in the Berlin cathedral (Berliner Dom):
From technology to sport
Google was quick to respond to the tragedy, adding a black ribbon to its German homepage.
Meanwhile, the German national football team will wear black ribbons in a game against Australia this evening in Kaiserslautern.
"We are all deeply affected and uncomprehending. Our thoughts are with the relatives and the victims," team manager Oliver Bierhoff said on Tuesday evening.
On Wednesday, Bayern Munich footballers held a minute of silence in memory of the crash victims.