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Basilica of San Petronio

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Bologna ·
Monument|Church|Sights|Historic Site ·
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Aug 20, 2025 - Aug 21, 2025
2 adults, 1 room
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A Marvel of Gothic Architecture: Basilica of San Petronio

Constructed starting in 1390, the Basilica of San Petronio is a massive Gothic structure dedicated to Bologna's patron saint, Saint Petronius.

The basilica holds historical and cultural significance, being the sixth-largest church in Europe at 132m by 66m by 47m. Its brick and marble facade remains unfinished, a reminder of halted ambitions due to papal interference in the 16th century. Inside, the notable 67.7m sundial, designed by Gian Cassini, was vital for calendar reform. The basilica also houses the provocative fresco by Giovanni da Modena.

Unforgettable Highlights

  • 🕰️ Massive Sundial: Instrumental in calendar accuracy.
  • 🎨 Artistic Chapels: 22 unique chapels filled with historical artwork.
  • 🌍 Historical Importance: Site of significant religious and cultural events.

The basilica is generally free to enter, making it accessible for tourists, families, and historians alike.

Interesting Facts about Natural History Museum Basilica of San Petronio

Construction History

Construction began in 1390 but remains unfinished due to a 1561 papal decree.

Architectural Quirks

The main facade continues to show evidence of its incomplete status.

Police Presence

Ongoing security due to threats related to the controversial fresco inside.

Relics Transfer

The relics of Saint Petronius were moved here in 2000 from Santo Stefano.

Fresco Controversy

Giovanni da Modena's fresco depicts Muhammad and has sparked tensions over the years.

Location

Piazza Galvani

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