Unique forms of the Sagrada Familia

Many architects seem to have a signature form or building block. Frank Lloyd Wright used mental building blocks that he played with as a child. Other architects tend toward forms resulting from folded paper, watercolor strokes, or nature. While a generally typical cathedral in plan, the Sagrada familia stood out for the unique forms it contained. I found the iteration of the starburst or lotus shape interesting, particularly as it was present in the interior and all facades but the Passion facade. At first I thought the almost space-age interior and the sculpture outside had nothing in common, but this form prevailed in both whether for decoration, or structural, or even overall with the shapes of the towers.