The structure is enormous and features a five-star hotel, shopping mall and car park capable of holding over a thousand cars.

New York City's skyline looked a little darker Saturday night without the Empire State Building's lights. Its famous tower lights were off from 8:30-9:30 p.m. in observance of Earth Hour.

The Mecca Clock Royal Tower in Saudi Arabia is the fourth-tallest building and sixth-tallest freestanding structure in the world, as well as the tallest clock tower. It stands at the heart of The ...