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

Changsha Changsha (; ; ; Changshanese pronunciation: (), Standard Mandarin pronunciation: ) is the capital and the largest city of Hunan Province of China. Changsha is the 17th most populous city in China with a population of over 10 million, an ...

, the capital of

Hunan Hunan (, ; ) is a landlocked province of the People's Republic of China, part of the South Central China region. Located in the middle reaches of the Yangtze watershed, it borders the province-level divisions of Hubei to the north, Jiangxi to ...

province in China. It was built in 19 days in 2015 by

Broad Sustainable Building Broad Sustainable Building Co., LTD (BSB) (Chinese:远大可建科技) is a construction company and a wholly owned subsidiary of Broad Group, specializing in developing prefabricated buildings. Several of its projects from BSB drew media attentio ...

, a subsidiary of China's

Broad Group Broad Group is a private manufacturer of central air conditioning non-electric absorption chillers that are powered by natural gas and waste heat based in Changsha, China. It is also the parent company of Broad Sustainable Building, a prefab buil ...

, using a

modular construction Modular construction is a construction technique which involves the prefabrication of 2D panels or 3D volumetric structures in off-site factories and transportation to construction sites for assembly. This process has the potential to be superior ...

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 SkyCity (originally known as the Eye of the Needle) was a revolving restaurant and bar situated atop the Space Needle in Seattle, Washington, United States. Description and history The restaurant featured a carousel (or ring-shaped) dining fl ...

, where architects from around the world designed 17 of the hollow atriums located inside of the skyscraper.

References

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