opening in Taipei of the first building to be more than half a kilometer a tall,
Taipei 101. However, all of these were to be dwarfed by the opening of the Burj Khalifa in Dubai in 2010, which showed an incredible 62% increase in height on the previous world's tallest building. Most new record holders had only ever shown an increase of between 5% and 20% Countries and cities have been competing with each other for centuries to hold records for the tallest structures. To many people tall buildings are a sign of