Dubai street art turns urban sprawl into open-air museum The streets of Dubai may be known for architectural superlatives like Burj Khalifa, the highest of the world's high-rises, and the Middle East's largest shopping centre Dubai Mall. But a group of street artists now also wants to turn the concrete walls of a fast-growing urban sprawl into an open-air museum that celebrates Emirati heritage and speaks to everyone in the multicultural city. IMAGES AND SOUNDBITES