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.