Pentominium, United Arab Emirates

   Height: 1692.91 feet (about 516 meters)

 

Pentominium

Pentominium is a supertall skyscraper under construction in Dubai. It was expected to be completed in 2013, but the construction has been halted since August 2011. When completed, the building will have 122 floors above ground, and will become the second tallest building in Dubai after Burj Khalifa and one of the tallest buildings in the world.