Saint Mary's Church

St. Mary's Church dates back to the 13th century, making it one of Berlin's oldest surviving buildings, and its red-brick Gothic tower now stands in an almost surreal juxtaposition against the looming modern TV Tower just steps away — a contrast several reviewers single out as the highlight of visiting. Inside, a faded medieval Dance of Death fresco survives along one wall alongside an ornate Baroque pulpit and a historic organ, giving the interior more depth than its plain brick exterior suggests. It's free to enter, quiet compared to the crowds at nearby Alexanderplatz, and pairs naturally with a visit to Rotes Rathaus and the Neptune Fountain just around the corner. At around 20 minutes, it's an easy addition to a Mitte walking route rather than a dedicated trip.