Most visitors to the Sagrada Familia spend forty minutes photographing the outside and twenty minutes inside. It should be the other way around. The facades are what Gaudi‘s building is famous for, but the interior is what he actually spent his life solving, and almost nobody who walks through it knows what they are looking at.
Two Facades, Two Different Buildings
Walk around before you go in and you will notice the basilica seems to have been designed by two people who disagreed. It was. The Nativity facade, facing east, is Gaudi’s own, the only one finished in his lifetime: soft, overgrown, encrusted with stone plants and animals until the architecture almost disappears under them. The Passion facade, facing west, was carved by Josep Maria Subirachs from the 1980s onward, and it is deliberately the opposite. Gaunt, angular, stripped back to bone. People often assume the harsh one is unfinished or a mistake. It is a modern sculptor refusing to imitate a dead genius, which is arguably the more respectful choice.
On the Nativity side, low down at the base of the central columns, there are two tortoises: a sea turtle on the side facing the sea and a land tortoise on the side facing the mountains. On the Passion side, look for Subirachs’ four-by-four magic square, where every row, column and diagonal adds up to thirty-three.
The Forest, and Why the Columns Lean
Step inside and the reason for everything becomes obvious in about four seconds. Gaudi was building a forest. The columns branch as they rise, splitting into limbs that carry the vaults the way a tree carries its canopy, and the ceiling above breaks into shapes that read as leaves and light coming through them.
This is not decoration. Gothic cathedrals need flying buttresses because their vertical columns cannot take the sideways push of a stone roof. Gaudi found the load paths first, hanging weighted strings upside down in his workshop to let gravity draw the ideal arch, then inverting the result. Tilt the columns along those lines and the buttresses become unnecessary. He called them a crutch. The forest is a structural argument, and it holds up a roof no medieval builder could have raised.
The Light Is on a Timetable
The stained glass, made by Joan Vila-Grau, is arranged by colour temperature and orientation. The eastern windows are blues and greens; the western windows are reds, oranges and yellows. Morning light comes through the cool side, and the nave fills with green and blue. Late afternoon light comes through the warm side, and the same stone turns orange and red.
This changes what your visit is worth. An 11 am ticket and a 6 pm ticket are two different buildings. If you have any flexibility, book late afternoon and sit down on the eastern side of the nave so the warm windows are opposite you.
The Parts People Skip
The crypt, below the main floor, is where Gaudi is buried. He died in 1926 after being hit by a tram, unrecognised for days because he was dressed shabbily and carrying no identification, and he had been living on site for years by then. Almost nobody goes down.
Outside the eastern side sits a small school building Gaudi designed in 1909 for the children of the construction workers, its roof a rippling curve made from flat tiles. Le Corbusier stopped to sketch it when he visited. It takes three minutes and most visitors walk straight past it.
Practical Notes
Entry is by timed slot and the good hours sell out well ahead, particularly in summer. The tower visits are ticketed separately and are worth it if you are comfortable with heights: you go up by lift and come down on foot, and the descent is a long narrow spiral staircase with no way to turn back once you are in it.
Construction has been running since 1882 and the final phase has centred on the great Tower of Jesus Christ, timed toward the centenary of Gaudi’s death. Check the official site before you book to see which parts are open, because scaffolding moves and sections close at short notice. It has been a building site for over a hundred and forty years. That is part of what you are visiting.
