Basilica and Expiatory Church of the Holy Family (Sagrada Família)

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The Basilica de la Sagrada Família is a large Roman Catholic church in Barcelona, begun in 1882 and still unfinished, designed for most of its life by the Catalan architect Antoni Gaudí. Its full name names its purpose: it is an expiatory church, built from donations and offerings rather than public or diocesan funds, raised as an act of collective atonement. Gaudí took over the project in 1883, a year after construction started, and spent the last decades of his life on almost nothing else; when he died in 1926, struck by a tram, only a fraction of the building stood.

What sets the basilica apart from other large churches is the degree to which its meaning was meant to be read off its stone. Gaudí planned the whole as a catechism in architecture. The three great façades were each assigned a phase of the Christian story — the Nativity, the Passion, and the Glory — and the eighteen planned towers a hierarchy of figures: twelve for the apostles, four for the evangelists, one for the Virgin Mary, and the tallest for Christ, set deliberately below the height of the surrounding hills so that the work of human hands would not rise above the work of God. The interior columns branch like trees toward the vaults, a forest rendered in stone, lit through windows tuned to shift in colour across the day.

How far this program counts as esoteric is a real question rather than a settled one. Gaudí was a devout and increasingly ascetic Catholic, and the building’s symbolism is, on its own terms, orthodox doctrine made visible — the dogmas of the Church given form. Yet the obsessive numerical and geometric ordering, the hidden magic square on the Passion façade whose lines sum to thirty-three, and the conviction that natural form encodes divine law have invited readings that place Gaudí closer to a Christian-Platonist or hermetic sensibility, in which the forms of nature are themselves a script of the sacred. Such readings are interpretation, contested among historians; the documented intention was devotional and catechetical.

Construction continued in fits after Gaudí’s death, interrupted by the Spanish Civil War, in which much of his plaster models and drawings were destroyed — leaving later architects to reconstruct his intentions from fragments, a process that remains disputed. Pope Benedict XVI consecrated the building as a minor basilica in 2010, while it was still a working site. Work goes on. The church stands as both a functioning place of worship and the longest-running architectural project of its kind, a cathedral conceived in one century and built across more than two.

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