Sagrada Família: The Stone Book Gaudí Left Unfinished

Antoni Gaudí knew he would not live to see this church finished. He worked on it anyway, and in his final years he worked on almost nothing else. The Sagrada Família is not a building he completed. It is a book he left open, with the first chapter carved in full and the rest set down as instructions. Stand at its foot on the Sagrada Família tour and you are reading a text written across a century and a half, in two very different hands.

The chapter Gaudí wrote by hand

The story begins on 19 March 1882, the day the first stone was laid. Gaudí was not the original architect. Francisco de Paula del Villar drew the first plans, then resigned, and Gaudí took over the work in 1883. He was officially appointed to the post on 28 March 1884, and from there the building became the work of his life.

He concentrated on one face of it above all others: the Nativity Façade, which turns east and northeast onto Carrer de la Marina. This is the chapter he wrote by hand. It is dense, ornate, encrusted with stone that seems to grow rather than to have been cut. Where later builders would raise walls, Gaudí grew a forest. He devoted his final years almost entirely to this church, and he left the Nativity Façade substantially advanced, though it was only finished in 1936, a decade after his death.

When Gaudí died in June 1926, struck by a tram and buried afterward in the basilica's own crypt, only the Nativity Façade and the crypt were substantially complete. That was roughly 15 to 25 percent of the whole. A man had given his life to the thing and left behind not a finished church but a beginning, thorough enough that the rest could be read from it. The Nativity Façade and the crypt are now UNESCO World Heritage, added in 2005 as an extension of the 1984 listing of the Works of Antoni Gaudí.

The answer a later hand gave

Turn now to the opposite side of the church, the southwest, facing west toward Carrer de Sardenya. This is the Passion Façade, dedicated to Christ's Passion, his death and his resurrection. Construction here did not begin until 1954, and its four steeples were not completed until 1976. By then Gaudí had been gone for half a century, and the question of how to continue his book had become one of the great controversies in Spanish architecture.

The answer came from the sculptor Josep Maria Subirachs, who lived from 1927 to 2014. He was commissioned in 1986, and the first of his sculptures was placed in 1987. What he produced is deliberately unlike Gaudí. Where the Nativity Façade is warm and overgrown, the Passion Façade is harsh, angular, expressionist. Subirachs did not imitate his predecessor, and he refused to. He argued that a copy would be a forgery, and that the theme of suffering demanded a starker language than celebration ever could.

So the two façades face away from each other, one telling of birth in a florid hand, the other telling of death in a severe one, and the visitor is left to decide whether that is a rupture in the book or the truest possible continuation of it. Gaudí himself worked in the vocabulary of Catalan modernisme, a whole grammar of ornament you can learn to read across the city; the invented language of Modernisme is the alphabet the Nativity Façade is written in.

The last stone

For most of its existence the Sagrada Família was defined by what it lacked. That changed on 20 February 2026, when the building reached structural completion. The central Tower of Jesus Christ topped out at 172.5 metres, and with that the Sagrada Família became the tallest church in the world. The book Gaudí left open had, after a century and a half, been carried to its final page.

Long before that, the church had already become the beating heart of the city. Pope Benedict XVI consecrated it and proclaimed it a basilica on 7 November 2010. And it is, by a wide margin, Barcelona's most-visited monument: 4,833,658 visitors passed through it in 2024, and about 4.88 million came in 2025. People do not queue in those numbers for a finished thing. They queue for the sensation of watching a single idea outlast the man who had it.

If you want to keep reading Barcelona in stone, the companion to this piece looks at another modernista who built for the body rather than the soul, the story of the Hospital de Sant Pau built as art, which stares straight down its own avenue at this very basilica. You can plan the walk itself from the Barcelona city page, the best walking tours of Barcelona, or the dedicated architecture walking tours of Barcelona.

The Sagrada Família rewards the visitor who reads it slowly. Arrive knowing which hand carved which face, and the church stops being a spectacle and becomes an argument between two centuries about how to finish another person's sentence.

Sources

• Wikipedia, "Sagrada Família" (en.wikipedia.org)
• visitarsagradafamilia.com
• Roamer audio-tour transcript, "Sagrada Família" (barcelona-sagrada-familia)