Mini Sky City (小天城) is a 57-story, 204m high building in

Changsha Changsha is the capital of Hunan, China. It is the 15th most populous city in China with a population of 10,513,100, the Central China#Cities with urban area over one million in population, third-most populous city in Central China, and the ...

, the capital of

Hunan Hunan is an inland Provinces of China, province in Central China. Located in the middle reaches of the Yangtze watershed, it borders the Administrative divisions of China, province-level divisions of Hubei to the north, Jiangxi to the east, Gu ...

province in China. It was built in 19 days in 2015 by Broad Sustainable Building, a subsidiary of China's Broad Group, using a modular construction system. The company has ambitions to use similar techniques to build a much larger project, Sky City, which is intended to be 220 stories tall. In 2017 mini Sky City was involved in international architectural competition SkyCity Challenge, where architects from around the world designed 17 of the hollow atriums located inside of the skyscraper.

References

2015 establishments in Changsha Buildings and structures in Changsha {{china-struct-stub