Next Tuesday, the nearly 850-foot-tall Shenzhen Stock Exchange Building will be inaugurated as the new head of capitalist trading in Hong Kong. OMA, Rem Koolhaas’ architectural firm, was commissioned to design and construct the soaring structure in 2006. After nearly $500 million in expenditures, according to reports by the Wall Street Journal blog, the square-form skyscraper with a surprising floating base, is complete. Situated 118 feet above an outdoor, ground-level plaza, the Shenzhen Stock Exchange’s three-story cantilevered podium creates drama in the building’s form while satisfying practical needs. This floating base provides shade to pedestrians, a garden rooftop, and an outward indication of interior operations. OMA located the stock exchange’s main trading floors in the interior of this base, allowing maximum square footage for the computer servers. With a facade constructed of a gridded exoskeleton over a patterned glass curtain wall, the building reacts to changes in weather, muting to reflect grey days and brightening when the sun peeks out. The generic skyscraper design of the rest of the structure allows it to fit in with existing neighbors, but clever details like these set it apart from the typical.