A domed church rises on Bebelplatz along Unter den Linden, standing as the oldest major Catholic church in Berlin. Built in the mid-18th century, it has long been a landmark of the boulevard, with a round, classical form that sets it apart from the city’s many spires and brick façades.
The church suffered damage during the mid-20th century and later gained a bold new interior. In the 1950s, its inside was redesigned in a clean, modern style, creating a striking contrast with the baroque-inspired exterior. Light, simple lines and open space now define the sanctuary, while the dome continues to anchor the building’s historic silhouette.
Below the main level, a series of treasure chambers offers a more intimate encounter with the church’s past. These rooms hold sacred objects and historical pieces that trace centuries of Catholic life in Berlin, adding depth to the experience above ground.
Source - https://en.wikipedia.org/wiki/St._Hedwig%27s_Cathedral