Sticking with the theme of religious buildings, this is the city's New Synagogue. It was damaged during the Kristalnacht, but not as badly as the Rykestrasse Synagogue. In fact, it received more damage from the Allied bombs than from anti-semitic vandalism!
Luckily, after the war the dome was rebuilt and the building restored to its former glory. It's a very lovely place. In the summertime, visitors can climb the dome for a bird's eye view of Berlin.