Aldo van Eyck designed this building much like his others as part of Structuralism.  He uses many different shapes and wants the empty space to be important. In the interior of the church he combined the quality of a low crypt-like space with a tall gothic-like one so that it felt low when seated during mass and tall when walking around. The tall three spaces opened upwards into the spacious circular drums above through which light would fall onto the altar and people.