Some of the best-known monuments in Europe and elsewhere have been illuminated with Belgium's national colors in a show of solidarity after the attacks in Brussels.
At nightfall Tuesday, the Eiffel Tower in Paris lighted up in the black, yellow and red colors of the Belgian flag.
Berlin's landmark Brandenburg Gate, which after the November attacks in Paris was illuminated with the French colors of red, white and blue, also was lighted up in Belgian colors. A few blocks away, some people laid flowers and lighted candles outside the Belgian Embassy.
And in Italy, Rome's Trevi Fountain joined in the show of Belgium's colors.
San Francisco City Hall
(John G. Mabanglo / European Pressphoto Agency)
One World Trade Center
(Trevor Collens / EAFP/Getty Images)
The Blue Bridge in Grand Rapids, Mich.
(Nick Gonzales/The Grand Rapids Press)
The monument 'La Minerva' in Guadalajara, Mexico
(Ulises Ruiz Basurto / European Pressphoto Agency)
Eiffel Tower, Paris
(Ian Langsdon / European Pressphoto Agency)
Trevi Fountain in Rome
(Gabriel Bouys / AFP/Getty Images)
Brandenburg Gate, Berlin
(Odd Anderson / AFP/Getty Images)
Royal Palace at Dam Square in Amsterdam
(Evert Elzinga / AFP)
The Burj Khalifa in Dubai, United Arab Emirates
(Ali Haider / European Pressphoto Agency)
Nagyerdei Stadium in Debrecen, Hungary
(Balazs Mohai / MTI via AP)
Capitoline Hill in Rome
(Guiseppe Lami / European Pressphoto Agency)
European Union Commission building in Brussels
(Philippe Huguen / AFP/Getty Images)
Town council building in Belgrade, Serbia
(Oksana Toskic / AFP/Getty Images)
The court of Lyon in Lyon, France
(Jeff Pachoud / AFP/Getty Images)
Palace of Culture in Warsaw
(Czarek Sokolowski / Associated Press)