Nikolaikirche

Nikolai Church, Berlin
The Nikolaikirche is the oldest intact church building in the historic center of Berlin and is a listed building. It is located in the Mitte district of the Nikolaiviertel between Spandauer Strasse, Rathausstrasse, the Spree and Mühlendamm. The church, which was dedicated in 1938, is part of the Berlin City Museum Foundation and regularly hosts concerts.
Text/Source: Wikipedia
de.wikipedia.org/wiki/Nikolaikirche_(Berlin)

The Nikolaikirche is the oldest intact church building in the historical center of Berlin in the Nikolaiviertel and is a listed building. The church, which was de-warmed in 1938, is a museum belonging to the Berlin City Museum Foundation, where concerts are also held regularly.

The hymn writer Paul Gerhardt worked here as a pastor from 1657 until his impeachment in 1666 and was then a pastor in Lübben until the end of his life

The Nikolaikirche with its striking double spire is the heart of the Nikolaiviertel and the oldest parish church in the city. After the reconstruction in 1987, the Nikolaikirche houses a permanent exhibition on the history of the church and the Nikolaiviertel. Every Friday at 5 p.m. there is an organ concert to listen – relax – think.

More information at: visitberlin.de/de/nikolaiviertel

Really not the prettiest church in Berlin, but very striking thanks to the two towers.
Oldest intact church in Mitte, today a museum and concert venue.

The Nicolai Festival takes place once a year. I do not know whether this will also be the case in 2020.

Nothing remains of the original church. Destroyed in war. And then rebuilt by the GDR. But by that time it was no longer a church. Today exhibition about Berlin city history.

As far as I know, it is the oldest church in Berlin.