Barcelona’s Sagrada Familia is gearing up for Pope Leo XIV’s upcoming Mass, but beyond the crowds lies a network of lesser‑known spaces and symbols. Rector Josep Turull guided a private walk that exposed the Passion façade’s cryptic “magic square,” a family of peregrine falcons nesting in the St. James tower, and the modest underground chapel that houses Antoni Gaudí’s tomb.

The Passion Façade’s “magic square” that adds up to 33

According to the Associated Press,the west‑facing Passion façade was designed by Gaudí to appear “harsh and cruel,as if made of bones ,” portraying Christ’s final suffering. Sculptor Josep Subirachs later added a 4 × 4 numbered grid that sums to 33 in every direction – the age of Jesus at crucifixion – turning the stone surface into a theological puzzle.

Peregrine falcons reclaim the St. James tower after 20‑year revival

The basilica’s St. James tower now hosts a breeding pair of peregrine falcons, a conservation effort that began two decades ago to re‑introduce the birds to Barcelona. Turull notes the raptors “recover the cycle of natural life” and help keep pigeon droppings at bay, highlighting the building’s unexpected role in urban wildlife management.

Gaudí’s modest tomb and the underground chapel that Pope may visit

Descended through a side entrance, visitors find a quiet underground chapel where dozens attend silent Mass. It is also the resting place of architect Antoni Gaudí, whose tomb sits in a floor niche; pilgrims light candles and claim favors granted through his intercession.. The Vatican’s canonization process, which declared him “venerable” in 2025,could see a papal prayer at the tomb, though that remains unconfirmed.

World’s tallest church tower reaches 566 feet as Pope prepares blessing

In October,the Tower of Jesus Christ was raised, making Sagrada Familia the world’s tallest church at 566 feet. Pope Leo XIV is slated to step outside after the Mass to bless this new spire, underscoring the basilica’s dual identity as a tourist magnet and a living parish.

What remains uncertain about the papal visit?

The report does not confirm whether the pope will actually pray at Gaudí’s tomb, nor does it detail the exact schedule for the blessing of the tower. Additionally, the long‑term plan for completing the 144‑year‑old construction remains vague, leaving observers to wonder when the basilica will finally be finished.