From Deutsche Welle:
The massive remains of an ancient wall in the city of Cologne were first unearthed a year ago during construction work for a new Protestant church community center.
After comparing the structure with other ancient buildings, including the Roman city of Ephesus in present-day Turkey that had a monumental library, it turned out that the remains in Cologne belonged to a library built in the 2nd century in the then-Roman city.
The remains of the ancient library are to be integrated into the new church building, with part of the wall being made accessible to visitors. Other parts of the excavation will be preserved to give access to future generations of archaeologists.
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