By means of a clever combination of corridors and patio wells, Antoni Gaudí solved in a simple and effective way the accessibility around the building, while at the same time providing it with an evocative natural light.Gauudí used a very cheap material (brick) in order to create reallity imaginative shapes. The "solomonic" colums are sturdy and can support a lot of weight, while the ones with just one brick are more graceful