Burj Dubai in United Arab Emirates is already the tallest building in the world at 2,200 feet but the owners of the building are not done yet. They want to extend its height even more, but exact number is not known.
The Burj Dubai, with an estimated construction cost of $4 billion, is designed by American architect Adrian Smith. It will be completed by next year but no one is sure how tall it will be due to corporate secrecy.
When it was counted last, it stood at a record height of 2,200 feet tall and it is still growing. More than 22 million man hours of labor have been spent so far in building this structure.
The building boasts some of the high-tech innovations in the industry: two double decker lifts will carry 42 people at a time at a record speed of 40 mph. It has automated robotic window cleaning platforms and a system of pipes to collect condensation from the windows. Also, it has solar and wind power generators in the building.
In order to combat fire problems, pressurized air-condition refuges are used to allow heat or fumes to escape at every 25th floor. The stairwells are fireproofed and there is a special lift just to move firefighting equipment.
The Burj will be a combination of office, hotels and residential properties. The first 37 floors will be the Armani Hotel. In the other floors, there will be offices and about 700 private apartments in the building.
The Y-shape plan of the tower, copied from Islamic designs on mosque roofs, maximizes views of the Persian Gulf.
Besides this tallest building, there are other buildings being built, as shown below:
This will be the tallest building for the next few years, but there is a Madinat al-Hareer building in Kuwait, which when completed in the next decade will be taller than Burj-Dubai. It will be twice as tall as the Taipei 101, the previous tallest building in the world.
Madinat al-Hareer vs. Burj Dubai
Here is another link that shows some of the tallest buildings in the world, mostly new. In the list, there are no new buildings from the U.S. and Canada.