Basilica of the Sagrada Família

Gaudí devoted the final stage of his life to the Sagrada Família, to the point that, when he died in 1926, he was living in his workshop-studio within the temple grounds and was buried in the crypt as a gesture of recognition and tribute. This total dedication makes the building an exceptional work: a cathedral conceived in the 19th century and still under construction today. On 7 November 2010, the temple was consecrated as a Basilica by Pope Benedict XVI.

The project articulates the Christian narrative through three monumental façades, the Nativity, the Passion and the Glory façades, and a set of eighteen towers symbolising the twelve apostles, the four evangelists, the Virgin Mary and Jesus Christ. In this ensemble, sculpture is not a secondary element, but rather a visual language integrated into the architecture in the service of liturgical expression.

From a construction perspective, the Sagrada Família is a true laboratory of structural innovation. Gaudí used hyperbolic paraboloids in the vaults, highly efficient geometric forms that make it possible to create light yet resistant surfaces. To study load behaviour, he relied on stereofunicular models and numerous plaster models, an experimental method fundamental to the development of the project.

In the central nave, Gaudí drew inspiration from the growth of trees to design a system of branching columns which, from a central trunk, distribute loads efficiently and create the sensation of a stone forest, offering a unique spatial experience. The columns are built using different types of stone, Montjuïc stone, granite, basalt and porphyry, combining structural, symbolic and expressive criteria.

The stained-glass windows are an essential element in the temple’s spiritual and architectural experience. In Gaudí’s conception, light becomes architectural matter and symbolic language, an expression of the sacred that transforms the interior into a changing space throughout the day. Through a carefully studied chromatic gradation, cool tones, blue, green and violet, dominate the Nativity façade, associated with the light of dawn, while warm colours, reds, oranges and yellows, prevail on the Passion façade, evoking sunset light and the symbolism of life’s decline.

The bell towers are the temple’s most visible elements. Parabolic in shape and tapering towards the top, they emphasise the symbolic ascent towards God and are crowned with polychrome trencadís. The first completed tower, dedicated to Saint Barnabas on the Nativity façade, was finished in 1926 and is the only one Gaudí saw completed.

The central tower of Jesus, standing 172.5 metres high, makes the Sagrada Família the tallest building in Barcelona and the tallest church in the world, respecting Gaudí’s wish not to surpass the height of Montjuïc, “so as not to exceed the work of God”.

After Gaudí’s death, the direction of the works continued under his collaborators and successors, who have remained faithful to the original project through models, plans and documentation. Today, the Sagrada Família is a universal symbol of Barcelona and a living testimony to architecture’s ability to unite spirituality, technique and nature in an unprecedented work.

The crypt and the Nativity façade have been declared a Historic-Artistic Monument (BCIN category) since 1969 and were added to the UNESCO World Heritage List in 2005 as part of the Works of Antoni Gaudí.