Burj Khalifa, the tallest Skyscraper, sits in Dubai and is 829.84 m in height. This tallest man made structure was built in the span of 5 years and got completed in the year 2010. It also owns the record of "Building with most floors" with 163 floors.
Taipei 101 in Taiwan which was the tallest skyscraper until 2010 is the 2nd highest building in the world and stands at the height of 508 m. Taipei 101 became the first building which broke the half-kilometer mark in height.
Shanghai World Financial Center, designed by Kohn Pedersen Fox, is China's tallest structure and world's 3rd highest structure and is 492 m in height. China also owns another 2 of the 10 tallest structures called Nanjing Greenland Financial Center (also known as Zifeng Tower), and Guangzhou International Finance Centre.