The final piece of the central tower of Barcelona’s Sagrada Familia has been laid in place, bringing the church to its maximum final height 144 years after work began.

After several days when it has been too windy to work, the upper section of the 17 metre-high four-sided steel and glass cross was winched into position at 11am on Friday, completing the tower dedicated to Jesus Christ. At 172.5 metres, the Sagrada Familia, to which the Catalan architect Antoni Gaudí devoted the later part of his life, is Barcelona’s tallest building and the world’s tallest church.

As the Catalan and Vatican flags were raised, Jordi Faulí, the chief architect for the project, said: “It’s been a joyful day, wonderful for all the people who have made it possible.”

A ceremony to mark the completion of the tower – the tallest of 18 conceived by Gaudí – is due to take place on the centenary of Gaudí’s death in 1926 on 10 June, 16 years after the church was consecrated by Pope Benedict XVI.