La Sagrada Família
Photo: Montse Pock on Wikimedia Commons
The most extraordinary church you'll ever see
Noteworthy for: Along with Gaudí's other buildings in the city, the church is a UNESCO World Heritage Site.
Talk of the town: The circumstances of Gaudí's death in 1926 remain somewhat vague, but rumour has it he was knocked over by a tram on his way to work on the building. He's buried in the crypt.
George Orwell considered Barcelona's most famous monument 'the ugliest building on earth'; others find its epic scale and fantastical marriage of Gothic and Art Nouveau styles gorgeous, giddying and moving.
Gaudí's visionary Roman Catholic church has divided opinion and attracted controversy since the plans were drawn up in the 1880s, but one thing's for sure: rarely has a project of such grand ambition and unfettered imagination been realised.
Or rather, is being realised: although Gaudí devoted the last forty years of his life to this singular expression of Catalan modernism, it was still only a quarter finished when he died - and today remains incomplete. None of the church's millions of yearly visitors see it without scaffolding, as features continue to be added according to Gaudí's original plans (although some dispute it's going the way he intended). The latest predicted date for completion of the building is 2026, the 100-year anniversary of the great architect's death.