The future headquarters for the Bilbao Bizkaia Kutxa, a savings bank in Spain, is sited on the south-eastern point of the Zorrotzaurre peninsula in Bilbao, Spain, with spectacular views of the river and the rest of the city. The form is defined by two star shapes that are at 45 degree angles from one another at the top and bottom, but merge into one another in the middle, giving the tower a spiraling look that has a different profile depending on the angle you are viewing it from. It will house 25,000 sq. m. total, 11,855 in the tower, 6,145 in the podium, and 10,234 underground. The primary structure is given by an exo-skeleton, and this is supported by the support system for the facade’s substructure, eliminating the need for interior columns.