Saudi Arabia knows how to keep up with the Joneses. The Burj Khalifa in Dubai has officially been the world's tallest building since its opening early last year, but by 2016-ish Saudi Arabia plans to let the UAE know exactly who the big brother is on the Arabian Peninsula. The Saudis have inked a deal between the Kingdom's holdings company and a certain Bin Laden Group to build the world's tallest building, an elegant yet extreme tower that will rise 3,281 feet above the streets of Jeddah.
At PopSci we're comfortable with the concept of time travel, but this story is perhaps a bit more than we can wrap our heads around. The Saudi Arabian city of Mecca is building the biggest clock in the world -- a massive 1,983-foot tower sporting four timekeeping faces each 151 feet in diameter -- with the goal of displacing Greenwich Mean Time as the world's central time zone.