Several landmarks across the world are showing solidarity with Brussels and people are setting up memorials following the terror attacks on Tuesday.

At least 30 people were killed and more than 230 injured after bombings at the airport and in a subway station during rush hour. ISIS claimed responsibility for the attacks. 

The Eiffel Tower lit up in yellow, red and black once nightfall came in Paris, according to the Associated Press. Five months ago, world landmarks were doing the same in solidarity with Paris after terror attacks in that city. Anne Hidalgo, the mayor of Paris, tweeted: "In solidarity with the people of Brussels, Paris will light up the Eiffel Tower in the colors of the Belgian flag tonight."

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Other landmarks that have been illuminated in Belgium's national colors so far are the Brandenburg Gate in Berlin, Germany, the courthouse in Lyon, France and Rome's Trevi Fountain, the AP reported. In the Czech Republic, people laid flowers and lit candles outside the Belgian Embassy. 

More photos can be seen on Twitter of landmarks such as Dubai's Burj Khalifa, the world's tallest residential building, and the Royal Palace in Amsterdam

New York Gov. Andrew Cuomo called for the 408-foot spire of One World Trade Center to display Belgium's colors as well. 

"Tonight, One World Trade Center will be displayed in black, yellow and red as we stand in solemn solidarity with the people of Belgium, just as they have done for us in the past," he siad in a statement. "We join the world in mourning the victims of these attacks and remain committed to helping create a more just and peaceful world."