The Khalifa Tower in Dubai, which started construction in 2004, costs about $1 billion and is 828 meters high and 164 floors. The Dubai Tower has set countless world records "including the maximum floors (169 floors), the highest swimming pool (76 floors) and the highest mosque (158 floors). If you take the express elevator (36 km per hour) to the highest viewing platform in the world, you can see the beautiful scenery 80 km away in good weather.