The construction primarily uses local stone, such as Montjuïc stone, to create the intricate façades and structural elements.

The interior features a variety of materials, including marble, ceramics, and colorful tiles, contributing to its vibrant aesthetic.

Gaudí incorporated innovative building techniques for his time, such as using reinforced concrete for the basilica's structure, allowing for the creation of complex and daring architectural forms.

The Nativity Façade symbolizes the birth of Jesus Christ, adorned with scenes from his early life and the natural world, reflecting Gaudí's reverence for nature and the divine.

The Passion Façade depicts the suffering and crucifixion of Christ, characterized by stark, angular sculptures and a somber atmosphere, evoking the solemnity of the Easter story.

The Glory Façade, still under construction, will represent the triumph of Christ and the path to salvation, with plans to include imagery of the Last Judgment and the Heavenly Kingdom.

Throughout the basilica, motifs inspired by Christian symbolism, such as vines, grapes, and wheat, are intricately woven into the design, conveying themes of rebirth, sacrifice, and spiritual nourishment.

The basilica's interior is characterized by a forest of towering columns, resembling the trunks of trees, which branch out to support the soaring vaults overhead, creating a sense of organic unity and harmony.

The ceiling is adorned with intricate patterns inspired by natural forms, including stars, flowers, and geometric shapes, which are illuminated by sunlight streaming through the stained glass windows, casting colorful reflections throughout the space.

The basilica's exterior is adorned with countless sculptures and decorative elements, including intricate carvings of biblical figures, saints, and angels, each meticulously crafted to convey emotion and narrative.
Ongoing Construction:

Construction of the Sagrada Família began in 1882 under the direction of Antoni Gaudí, who dedicated the latter part of his life to the project until his death in 1926.

Work on the basilica continues to this day, guided by Gaudí's original plans and vision, as well as modern engineering techniques and technologies.

The basilica is expected to be completed by 2026, with ongoing fundraising efforts and construction milestones marking its progress towards completion.