Engineering highlight and architectural vision in Barcelona

The Sagrada Família has reached a historic milestone. At 162.91 meters, it has topped Ulm Minster since October 2025 and is now the tallest church in the world. However, the building is far more than just a height record. It is an example of visionary structural engineering, digital planning and the combination of traditional craftsmanship with modern engineering technology. And despite the progress, one central feature of the project remains. It is still under construction.

The central Christ Tower, part of an ensemble of 18 towers, marks the latest step in a construction process that began in 1882 and has now reached a new dimension. The tower will reach its final height of 172.5 meters by mid-2026, just in time for the 100th anniversary of Antoni Gaudí’s death. The spire, made of steel, glass and ceramic elements, was prefabricated in segments from Bavaria and installed using special cranes. The choice of materials and production process follow strict requirements for wind stability, UV resistance and temperature resistance.

Building in generations
The construction process of the Sagrada Família can be read as a mirror of technological evolution. From the handcrafted 19th century to the reconstruction phase after the Civil War to the CAD-supported planning and digital production of the present day. The temple is both a monument and a research laboratory. Since the 1980s, parametric models, 3D simulations and robot-assisted stone processing have revolutionized its construction. Final completion is scheduled for 2033, subject to construction logistical challenges.

Structural design without buttresses
Gaudí’s structural concept deliberately dispenses with classic Gothic buttresses. Inclined load-bearing columns, whose lines follow the force curves of natural structures, as well as hyperbolic and parabolic geometries efficiently direct loads into the ground. This is complemented by real-time monitoring of the structure, analysis of natural frequencies and adaptive construction processes. The church demonstrates how biomimicry, engineering mathematics and sensor-based monitoring can keep a project of the century stable.

Financing without public funds
The Sagrada Família is still financed by donations and entrance fees. This principle gives the project autonomy, but has historically led to delays and social debate. Critical voices still accompany the construction to this day. Nevertheless, the basilica is considered a global symbol of visionary construction beyond conventional time and financing models.

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