The tallest structure in the world is the Burj Khalifa, a skyscraper at 828 m (2,717 ft). Listed are guyed masts, self-supporting towers, skyscrapers, oil platforms, electricity transmission towers, and bridge support towers. This list is organized by absolute height. See History of the world's tallest structures, Tallest structures by category, and List of tallest buildings for additional information about these types of structures.