Methods thought up from the terrain
Gaudí was then exploring shapes in nature, trying to find load-bearing geometry in organic forms. The slope is uneven, so he let columns, retaining walls and terraces lean with the land rather than flatten the hill to build. The row of rough stone columns under the colonnade is set at an angle for this reason.
Materials were used as found. Local stone for walls, broken tile for surfaces, colours laid piece by piece without pursuit of neatness. The edge bench shows this best: the curve follows the terrace, the backrest angle changes with it, and the broken tile connects across the surface, uneven to the touch.
These curved benches are later seen as a prelude to the language of the Sagrada Família. Here they still carry a tentative feel — the shapes are let loose, yet the structure honestly holds the slope. When the sun slants, the shadow on the stone bench traces that curve again.