Dubai opened the world’s tallest skyscraper Monday (January 4th, 2010) in a blaze of fireworks, then added a final flourish: It renamed the half-mile-high tower for the head of neighboring Abu Dhabi, whose billions bailed out Dubai amid last year’s financial crisis.

Long known as Burj Dubai — Arabic for “Dubai Tower” — the building rises 2,717 feet (828 meters) from the desert. The $1.5 billion “vertical city” of luxury apartments and offices and a hotel designed by Giorgio Armani also plans to have the world’s highest mosque (158th floor) and swimming pool (76th floor).