Saudi Arabia is pushing the limits of engineering with Rise Tower, a record-breaking 2-kilometer skyscraper set to become the tallest building in the world, soaring twice as high as the Burj Khalifa.

Add Yahoo as a preferred source to see more of our stories on Google. Sky-high expectations are set for the forthcoming “Rise Tower” in Riyadh, Saudi Arabia, which builders plan to have surpass the ...

Two high-rise towers are under construction next to Black Mountain and are now going vertical.