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Trip ideas  /  3 days of pasta and porticoes in Bologna  /  Basilica of San Petronio
Basilica of San Petronio, Bologna, Emilia-Romagna
Historic site · Bologna, Emilia-Romagna

Basilica of San Petronio

A civic temple, begun in 1390.Eight churches and towers pulled down.A front that is still unfinished.A meridian line of 66.8 metres.

Photo: ZeWrestler, Public domain, via Wikimedia Commons

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A civic temple

At least eight churches and towers were pulled down to make room

In 1388 the Consiglio Generale dei Seicento prepared a church to be a civic temple. To make room, most of one of the city's burgs was demolished, including at least eight churches and towers. The first stone was laid on 7 June 1390.

No dome

A cardinal sold the building materials, and the dome was never built

The third bay was built between 1441 and 1446, but Cardinal Baldassarre Cossa delayed it by selling the construction material and keeping the money. In 1514 a large dome was proposed. After two pillars and two pylons were built, the work was halted.

The front

The main front was started in 1538 and is still unfinished

The basilica is 132 metres long, 66 metres wide and 47 metres tall. Its façade was started in 1538 and remains unfinished. The main doorway was decorated by Jacopo della Quercia of Siena, with eighteen prophets on the archivolt.

132 mthe length of the basilica, with a front that is still unfinished

A coronation

An emperor was crowned in one of the side chapels in 1530

The nave has twenty-two side chapels. In the chapel of St. Abbondio, in the year 1530, Emperor Charles V was crowned by Pope Clement VII.

The line

A line in the floor measured the sun with a hole in the wall

In 1655 the astronomer Giovanni Domenico Cassini inlaid a meridian line in the left aisle. Sunlight through a small hole high in the wall falls on it at noon. With it Cassini made the first experimental verification of Kepler's laws of planetary motion.

66.8 mthe length of Cassini's meridian line

Day 1, morning

Next is Quadrilatero market streets.

More stories from this trip idea

The words are a retelling of the Wikipedia article San Petronio, Bologna, and are shared under CC BY-SA 4.0. They are checked against those articles, and a fact that is not in them is left out.

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