Dubai has been named the cleanest city in the world for the third time in a row. Dubai has also earned its reputation as the world’s safest and most beautiful city, according to the Global Power City Index. Taking to Twitter on Friday, His Highness Sheikh Mohammed bin Rashid Al Maktoum, Vice-President and Prime Minister of the UAE and Ruler of Dubai, said, “Cleanliness is civilisation. Cleanliness is culture. Cleanliness is part of faith.”