A 3D video has been released by the Sagrada Familia Foundation, the body responsible for overseeing the building project, which shows the ornate and gigantic cathedral in 2026, the date when the last brick will be laid.
That year will also be the centenary of the death of the building's architect, Antoni Gaudi, who was killed aged 73 after being stuck by a tram in 1926.
The video, which was released on September 25, shows how the monument will gradually gain height, until the remaining towers and the main facade are finished.
When at last completed, the Sagrada Familia will dominate the Catalan capital's skyline with the main tower of Jesus stretching 170 metres (560 feet) high.
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The cathedral, where building work began in 1882, already attracts an estimated three million visitors each year, making it the most visited tourist attraction in Barcelona.
Because of this, as well as technical and financial difficulties, the project was delayed for decades.
The video can be seen at:
https://www.Youtube.Com/watch?v=RcDmloG3tXU.