Watch | Europe’s landmarks light up in solidarity for Brussels

Three famous European landmarks were lit up in the colors of the Belgian flag on Tuesday night in solidarity with the victims of the Brussels bomb attacks. The Eiffel Tower in Paris, the Trevi Fountain in Rome and the Brandenburg Gate in Berlin were illuminated in black, yellow and red. Twin attacks at the national airport and a metro station on Tuesday have left at least 30 people dead and hundreds injured. The attack, claimed by Islamic State, came four days after the arrest in Brussels of a prime suspect in November's Paris attacks.