Burj Dubai tower, the world’s tallest skyscraper, is lit by laser lights during its opening ceremony in Dubai January 4, 2010. Dubai opened the world’s tallest structure on Monday, and a statement said it was 828 metres (2,717 ft) high. Dubai’s ruler Sheikh Mohammed bin Rashid al-Maktoum renamed the tower Burj Khalifa after the president of the United Arab Emirates and the ruler of the neighboring emirate of Abu Dhabi. REUTERS/Ana Marin (UNITED ARAB EMIRATES – Tags: BUSINESS CONSTRUCTION CITYSCAPE) :rel:d:bm:GF2E6141HZZ01