China To Build 220-Story Tower

And they say they're going to build it in just 90 days by using prefabricated parts partially assembled off-site.

The building will be 10m taller than the Burj Khalifa in Dubai, currently the tallest manmade structure on earth. SkyCity One, with a rather imposing design, will contain 1,610,000m2 across 220 storeys, containing a mix of residential, commercial and retail space and capacity for between 70,000 to 120,000 people. BSB estimates the cost of the project to be roughly £400 million, a surprisingly low figure considering it cost £967 million for the Burj Khalifa, and other megatall buildings around the world tend to have budgets around the £1 billion mark. The company claims that their unique construction method, with 95 percent of the building completed before they've even broken ground on the foundations, will keep costs down. BSB has experience throwing up tall buildings in a short period of time, as this video of a 30 storey skyscraper built by the company in just 15 days near a lake in Hunan province attests.

RELATED: Dubai's 206-story Burj Khalifa, which is still mostly free of tenants, took four years to construct. The building's sway at the upper floors is reportedly 5.5 feet. The 102-story Empire State Building, by comparison, only sways about three inches.(Via Towleroad)