WATCH: The world's tallest building has lit up in the Belgian colours to pay tribute to the Brussels victims 4 years ago

WATCH: The world's tallest building has lit up in the Belgian colours to pay tribute to the Brussels victims

So terribly sad.

Europe is still on high alert after a devastating terrorist attack on Zaventem Airport and the Maalbeek metro station in Brussels claimed the lives of at least 34 people.

Most of the world is only just coming to terms with the tragedy, and one very special tribute has already begun in the home of many Irish abroad, Dubai.

The Burj Khalifa, the tallest building in the world, has lit up in the colours of the Belgian and European Union flags and the results are beautiful.

Take a look.