Surpassing a previous record of building a 15 story hotel building in 6 days, the Chinese company, the Broad Group has constructed a 30 story building in only 15 days.
It would appear a majority of the building was built off site in panels that were lifted into place, a practice that is likely to become much more common in the near future. A 6 minute time lapsed video can be viewed here.
Thanks to Gizmodo.com for the original article.