Related Clues:

• ___ Dubai (world's tallest skyscraper, as of 2009)
• ___ Khalifa (world's tallest building)
• ___ Khalifa (world's tallest skyscraper)
• -- Khalifa, skyscraper in Dubai
• Tower, in Arabic
• __ Khalifa: Dubai structure that's the world's tallest
• Arabic for "tower"
• __ Khalifa: world's tallest building