The building started rising from street level in late February 2005.
The building's elevation features cosine curves on two sides, forming a transition between its square base and elliptical roof plan.
The structural system of the underground garage is completely different from the tower: its columns, beams and floors are made of pre-cast concrete pieces, while the tower is built with in-situ poured concrete.
A topping-out ceremony on March 20, 2007 featured hoisting of the Spanish flag along with a fireworks display.
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