After five years of speedy reconstruction work, Notre Dame will soon reopen. But the architect formerly in charge of Cologne Cathedral in neighboring Germany fears that things are moving too fast.

Paris' Notre-Dame Cathedral will reopen on Dec. 7, five and a half years after a devastating fire destroyed its roof and spire and caused major damage throughout.

In 2019, the Notre Dame Cathedral in Paris caught on fire, and this week, more than 5 years later, visitors will be able to enter the building once again.