The Burj Khalifa!

Know about the World’s Tallest Building!

The world's tallest building, the Burj Khalifa in Dubai, contains residences, hotel accommodations, and businesses, as well two observation decks, where you can see the sun set a second time in the same evening.For the more romantic among us, there is nothing quite like watching a sunset at the end of a balmy summer's day.

But for those lucky enough to be in the Burj Khalifa, the world's tallest building, it is possible to view the sun setting twice in less than a minute.At least, it is as long as you are in the Dubai skyscraper's glass lift.The needle-shaped skyscraper stands more than 828metres tall and can be seen from 60miles away.Construction of the tower began in 2004 at the height of Dubai's boom.

It boasts the world's first Armani hotel on the bottom floors as well as an obligatory observation deck on the 124th floor.As well as being the tallest building in the world, it also has the most stories and is the highest occupied.The tower's glass and steel exterior would cover 17 football fields if laid out flat and will take some poor workers between six and eight weeks to clean.

The concrete used in the core of the building could build a pavement 1,283 miles long and the cooling system produces enough condensation to fill 20 Olympic swimming pools a year.

Work on the Burj Dubai began in 2004 and continued rapidly. At times, new floors were being added almost every three days, reflecting Dubai's raging push to reshape itself over a few years from a small-time desert outpost into a cosmopolitan urban giant packed with skyscrapers. To ensure the tower doesn't twist or break during bad weather, it is built in a Y-shape, with three 'wings' evenly distributing the building's weight.