Museum Island (Museumsinsel)
In 1999 Museum Island (Museumsinsel in German) was named a UNESCO World Heritage Site. It sure deserves the distinction: this small island on the Spree has a singular collection of buildings, all filled with art and cultural artifacts.
The five museums are: Altes Museum (Old Museum), Neues Museum (New Museum), Alte Nationalgalerie (Old National Gallery), Bode Museum, and Pergamon Museum. Each museum is a world-renowned storehouse of works of significant cultural value. Taken together this is one of the finest museum complexes in the world.
Check ticket availability
Pd: outside the Berlin Dome there are some very good places where you can eat.
Schade nur, dass der Oergamonaltar erst 2020 wieder zu besichtigen ist
Note that the museum is under going renovations and some of the major exhibitions are closed but I still enjoyed the museum, particularly the Ishtar gate