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Jan 1, 1164
The Archbishop of Cologne, Rainald of Dassel acquired the relics of the Three Kings
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Jan 1, 1248
Construction of Cologne Cathedral commenced
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Jan 1, 1473
Construction halted leaving it unfinished
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Work re-started
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The completion of Germany's largest cathedral was celebrated as a national event, 632 years after construction had begun
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The cathedral was added to the UNESCO World Heritage List of culturally important sites
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Pope Benedict XVI visited the cathedral during his apostolic visit to Germany
