A comprehensive programme of celebrations, including light displays, performances, and Masses, will mark its completion and the centenary of architect Antoni Gaudí's death.
Events are planned from autumn 2025 to Christmas 2026, featuring an exhibition of archive photographs and concerts for children.
Special Masses, including one on 10 June 2026 to commemorate Gaudí, and public performances with human pyramids and folk dancers are among the highlights.
The year 2026 has been designated 'Gaudí Year' to raise public awareness of the architect's work, with all events open to the public, though some will have limited capacity.