The basement, where a garage is located, contains a large pillar of iron of which start several iron beams also support the circular courtyard, located immediately above. The façade also serves a structural function, so that their design and ornamentation have a great creative freedom, with undulating forms that evoke the ocean tides and produce various sensations lighting based on time of day. The wrought-iron balconies, decorated with abstract motifs. Gaudí designed even a type of tile hexagon of ceramics to place on the pavement of the street, new marine motifs such as octopus, stars and shells made by the company Escofet. This tile was chosen later to pave the Paseo de Gracia in Barcelona.