Artist conception of the proposed J220 Sky City Changsha.
Dubai in United Arab Emirates is home to the tallest building in the world. Named the Burj Khalifa, the skyscraper stand 2,722-feet tall and took five years to build.
However, early next year, a company in China plans to top that by building an even bigger structure in just 90 days.
If all goes to plan, the building, called Sky City, will have a school, a hospital, businesses and apartments for 30,000 people. It'll also be earthquake resistant and highly efficient.
Here to tell us more about Sky City is Edward Lifson, a cultural critic and senior lecturer at the USC School of Architecture.