The world's tallest building has opened with a bang in the emirate of Dubai, measuring a whopping 828m in height.
To give you an idea of how tall that actually is, ninemsn's graphic editors have calculated what the skyscraper would look like if it was positioned in the centre of Sydney.
The engineering marvel dwarfs existing skyscrapers, with the previous tallest building in the world, the Taipei 101 in Taiwan, reaching a comparatively modest 508m.
The building was named in honour of United Arab Emirates President Sheikh Khalifa bin Zayed al-Nahayan. (Credit: NineMSN)