tallest building

Tourists flock to Dubai just to see the Burj Khalifa, the world's tallest structure. Alain Robert went to climb it.

The Frenchman, known as Spiderman, has scaled more than 70 skyscrapers.

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According to the Austonian, after 640 days of construction, tonight The Austonian will become the tallest structure in Austin at 571 feet.

The next milestone comes in December when The Austonian's glass crown is installed. The 56-story building will reach 683 feet at that point making it the tallest residential building in the western United States.

Amazingly -- for those who have looked up at the tower recently -- the building still has 112 feet to go. The picture below shows the pouring of the 51st floor.