Everyone knows the outside of the Sagrada Família, and it is the part that ages worst in photographs: a thicket of spires covered in cranes, hard to frame and harder to understand. Then you go in, and within ten seconds you stop thinking about the outside.
Inside there is nothing to look at in the way you look at a façade. There is something that happens to you, and it is colour. The nave is blue and green on one side and red and orange on the other, and this is not a decorative choice: it is a clock. The colour of the light tells you which way you are facing and what time it is.
Why would an architect design a church that changes colour through the day?
A building site a hundred and forty-four years long
The foundation stone is from 1882, and the design was not Gaudí’s: it belonged to Francisco de Paula del Villar, who drew an unremarkable neo-Gothic church. Villar fell out with his clients and left after a year.
In 1883 the commission passed to Antoni Gaudí, who was thirty-one and had no intention of continuing the drawing he had inherited. He changed it from top to bottom and worked on it for the rest of his life, in his final years living on the site and attending to almost nothing else. He died on 10 June 1926, three days after being struck by a tram: nobody recognised him at first, because he was badly dressed and carried no papers. 1883 was also the year work began on his first house, Casa Vicens in Gràcia, which looks like nothing he would build here.
At his death one tower was finished. The rest was built in the twentieth century and in ours, with an interruption during the civil war in which the workshop burned along with most of the plaster models. That is why reconstructing the design was itself a job of decades: there were no complete drawings to follow, only fragments of models to piece back together.
The church was consecrated on 7 November 2010 by Benedict XVI, who raised it to a minor basilica. Until that day it was a building site you could visit; since then it has been a place of worship that is also a building site.
One thing worth knowing, because it explains the slowness: the Sagrada Família has never taken public money. It has been paid for by donations and, today, by tickets. The pace of the works has always depended on how many people came in.
10 June 2026, and why it is worth knowing
If you are reading this now, you have arrived after a watershed.
On 10 June 2026, the exact centenary of Gaudí’s death, the Tower of Jesus Christ was blessed and inaugurated, the last of the eighteen planned, with a solemn mass presided over by Leo XIV. The upper arm of its cross had been fitted on 20 February 2026. Around a hundred and twenty thousand people filled the streets.
With that tower the Sagrada Família reaches 172.5 metres and has become the tallest church in the world, passing Ulm Minster, which held the record. The eighteen towers follow a strict hierarchy: twelve for the apostles, four for the evangelists, one for the Virgin and the tallest for Christ.
One curiosity: those 172.5 metres are not an odd number by accident. Gaudí calculated the height so that the church would stay lower than the hill of Montjuïc, because in his judgement the work of man should not rise above the work of God. It is the only skyscraper in history designed to lose a comparison. It is not Gaudí’s only calculation about the finished church: on the roof of La Pedrera there is an arch which, according to the foundation that runs the house, is just the right height to frame it.
One practical warning: the Tower of Jesus Christ cannot be visited. It is finished on the outside, but interior work continues and current estimates point to 2027-2028. The towers you can climb are two others, and you will find them in the practical information.
Inside: a forest, not a nave
The first thing you notice on entering is that the columns do not behave like columns.
They rise, and at a certain height they divide into branches, which divide again, until they meet the vault in a starburst of ribs. Gaudí said it without metaphor: he wanted the interior to be a wood, and whoever enters to feel they are standing under a canopy of trees. This is not poetry added afterwards, it is how the building stands up. By branching the load, the leaning columns carry the weight down along their natural lines and make flying buttresses unnecessary, which in Gothic cathedrals exist to stop the walls from splaying.
The vault is not made of flat surfaces. It is a mosaic of hyperboloids and paraboloids, curved surfaces generated by straight lines, which have two useful qualities at once: they can be built with straight formwork, and they scatter light rather than reflecting it. Between them open skylights that look like flowers from below and are, in practice, the points where light comes in from the roof.
The simplest advice I can give you about this building is to stand under the crossing and stay still with your head up for a few minutes. The vault does not read in a photograph and does not read while walking.
The light programme: cold to the east, warm to the west
Here is the heart of the building, and it is the thing no photograph from outside can tell you.
The windows are not figurative and tell no stories: they are fields of colour. They were designed by Joan Vila-Grau, who worked on them from 1999 for some fifteen years, and the rule he followed comes from the orientation of the building.
The Nativity side faces north-east, taking the morning sun, and its windows are blue, green, turquoise. The Passion side faces south-west, taking the afternoon and evening sun, and its windows are red, orange, yellow, magenta. Birth goes with the rising light, death with the falling light.
The practical effect is that the same church is two different churches depending on the hour. In the morning the nave is underwater, blue and green, and the pale columns take on an aquarium colour. Late afternoon is the reverse: the red and the orange come in low, spread across the floor and the columns, and for half an hour the interior is incandescent.
If you can choose your hour, choose it for what you want to see rather than for the queue. Early morning for the blues, the last two hours for the reds. In the middle of the day the light is high and the colours are there but touch nothing, and that is the moment when the church looks most like its own photographs and least like itself.
The Nativity façade, the only one Gaudí saw
Of the three planned façades, the Nativity is the only one built while Gaudí was alive, and it is therefore the only one where his hand reads without intermediaries. Together with the crypt it is the part inscribed on the UNESCO World Heritage list.
It is covered in stone worked as if it had grown rather than been carved. The figures sit inside a tangle of leaves, animals, flowers and fruit, and the surface has not one smooth point: you look at it the way you look at a hedge, searching inside rather than across. Gaudí took casts from life, of people and of animals, and used them as the basis for his figures, which explains why those characters have the faces of ordinary people rather than of saints.
At the centre of the doorway a column carries the scene, and at its base sits a tortoise: a sea turtle on the seaward side and a land tortoise on the mountain side. Up the shaft runs the genealogy of Jesus. This is a building in which nothing is merely decorative, and it is worth remembering even when the meaning is not obvious. This is also the side where you can go up: the fast-track ticket with access to the Nativity tower includes the audio guide.
The Passion façade, and why it divides people
You come out on the opposite side and seem to be facing another building, put up by another civilisation.
The Passion façade was carved by Josep Maria Subirachs from 1987 onwards, and the figures have nothing of the fullness of the Nativity: they are angular, hollowed, faceted as though cut with an axe. The columns of the portico lean like shinbones. The stone is bare and the surface is empty, the exact opposite of the other façade.
It is the most contested part of the church, and the reason is a fair one: Subirachs made an authorial choice instead of imitating Gaudí, and anyone expecting continuity finds it jarring. To me it is defensible, for a reason that lies in the building’s own programme. If the Nativity is the façade of the rising sun and is covered in life, the Passion is the one of the setting sun, and the harshness is the point. A copy of Gaudí’s language applied to the crucifixion would have told the wrong story.
On the wall, beside the kiss of Judas, is a magic square of four rows by four. However you add it up, in rows, columns or diagonals, it always gives 33, the age traditionally given to Christ at his death. It is not a canonical magic square, because two numbers are repeated: it was built deliberately to produce that total.
The canopy over the altar
An octagonal canopy hangs above the altar, and the first time I saw it I thought it was an umbrella.
It is a ciborium, the cover that in older churches protects the altar, and Gaudí had planned it suspended rather than resting on columns. The crucified Christ hangs beneath it, at the centre. Around the rim run lamps and bunches of grapes and ears of wheat, the symbols of the eucharist, and the line of lights makes a crown.
It is worth looking at from a distance, from the back of the nave, because close up its function is lost: that object exists to say where the centre of the building is, in a church that by its very construction would tend not to have one.
What is missing, and the problem nobody has solved
The building is not finished, and the missing part is the largest of the three façades: the Glory, the main entrance, which according to the design should open onto carrer de Mallorca with a monumental stairway.
The problem is not technical, it is urban. The stairway and its forecourt need space that is currently occupied by inhabited buildings, and creating them would mean demolitions and compulsory purchase in a dense neighbourhood. The figures circulating in the press vary a good deal, and since it was not possible to verify them against an official source I am not repeating them: what is certain is that whole blocks, thousands of residents and many businesses are involved, and that neighbourhood committees have opposed the plan for years, arguing that the permits it rests on are decades old.
This is not a footnote. It means that the tallest church in the world currently has its main entrance blocked by a conflict nobody has resolved, and that in the meantime you go in through a side door.
Practical information
Data checked on 8 August 2026 on the official site sagradafamilia.org. Prices and hours change, and in Gaudí’s centenary year attendance is higher than usual: check again before you travel.
For Gaudí in the open air there is Park Güell, the residential estate Güell planned for sixty families, which you reach by metro. If your journey continues west, the Aljafería in Zaragoza and its two cathedrals tell of another Spain, the one where styles do not follow each other but pile up. Staying in Catalonia, Girona has the widest Gothic nave in the world and Tarragona Cathedral the finest Gothic altarpiece in the region. Outside the city, on its serrated mountain, the monastery of Montserrat has a monumental rosary that Gaudí also worked on.
