📅 Today in HistoryMay 7
558
In Constantinople, the dome of the Hagia Sophia collapses, twenty years after its construction. Justinian I immediately orders that the dome be rebuilt.
1274
In France, the Second Council of Lyon opens; it ratified a decree to regulate the election of the Pope.
1342
In Avignon, France, Cardinal Pierre Roger is elected Pope and takes the name Clement VI.
1697
Stockholm's royal castle (dating back to medieval times) is destroyed by fire. It is replaced in the 18th century by the current Royal Palace.
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