The Forest of Columns

The moment you step into the nave of La Sagrada Família, your brain short-circuits—because what stands before you looks nothing like a Gothic cathedral. This feels more like stumbling into an enchanted forest of light.

This “forest of stone” is the heart of La Sagrada Família’s interior, designed by Gaudí and continued after his death. The nave was formally consecrated by Pope Benedict XVI in 2010—a full 128 years after Gaudí first took over the project in 1882.

Every column mimics a tree: straight trunks below, gradually branching higher up, and finally spreading into complex star-shaped nodes at the ceiling—exactly like a forest canopy. Gaudí spent decades studying skeletal structures and plant growth patterns for this. The column cross-sections are not simple circles but polygons that rotate as they rise, allowing forces to flow to the ground in the most natural way possible.

The nave contains four types of stone columns, representing the four Evangelists and the twelve Apostles: porphyry (the hardest, symbolizing Peter), basalt, granite, and Argentine sandstone, arranged from interior to exterior. The softer the stone, the less load it bears—a structural hierarchy with symbolic meaning.

Gaudí was a true architectural biologist. He had no computers—the era didn’t offer them. His tools were hanging chains and weights, letting gravity form natural curves, photographing them upside-down to derive optimal arch geometry. This method, called the Funicular Model, was later celebrated by the modern architectural world as an intuitively precise form of structural analysis that preceded finite element computation.

When sunlight pours through Joan Vila-Grau’s stained glass windows on the western wall, the entire space undergoes a slow color migration—from deep blue morning light to golden-orange sunset—in the span of just a few hours. Gaudí once said: “Inside the Sagrada Família, no additional ornament is needed. Light itself is the ultimate decoration.”