Visit Gaudí's unfinished masterpiece, the Sagrada Familia, with a guide. Learn about its history and skip the long lines with a smartphone ticket. This ticket includes access to the towers of the Basilica of the Sagrada Família, which offer more details on Gaudí's work and views of the basilica and Barcelona.

On the tour, hear facts about the Sagrada Familia from a local guide, including that it was built entirely on donations. See the facades and interiors of the basilica. Notice how the columns resemble trees with twisting branches. Understand why it remains unfinished and how its designs incorporate plants, animals, and symbols of astrology in showcasing Christian beliefs.