Bologna Cathedral, dedicated to Saint Peter, was destroyed by fire in 1141 and consecrated again by Pope Lucius III in 1184. Its portico was added in 1396 and its west front rebuilt in 1467. Cardinal Gabriele Paleotti ordered an interior remodeling in 1575, and in 1599 the vaults collapsed, so new construction began in 1605.
The infobox says Baroque and gives completion as the 18th century, while the text says most of the present structure dates to the 17th. Alfonso Torreggiani designed the facade, built from 1743 to 1747. The text calls the interior emphatically Baroque. The article gives no building materials.
The early circular campanile is 130 feet (40 m) tall and was never rebuilt, and an external bell tower 230 feet (70 m) tall was built around it in the 12th and 13th centuries. The bell La Nonna weighs 7,300 pounds (3,300 kg).

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